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PST NTA Level 5

Pharmaceutical Sciences Notes, PST Level 5 Semester 1, PST NTA Level 5, PST05106 Pharmaceutical Organic Chemistry

Structure – Activity Relationship of Sulphonamides – PST05106 Pharmaceutical Organic Chemistry

NTA Level 5 • Semester 1 • PST05106 Structure – Activity Relationship of Sulphonamides Pharmaceutical Organic Chemistry • Source Session/Topic 29 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 29: Structure – Activity Relationship of Sulphonamides. Total Session Time: 120 minutes Prerequisites None Learning Tasks By the end of this session students are expected to be able to: • Define Sulphonamides • Explain chemical structure of sulphonamides • Explain the structure – activity relationship of sulphonamides Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board and chalk/whiteboard markers SESSION OVERVIEW |Step |Time |Activity/ |Content | | | |Method | | |1 |05 minutes |Presentation |Introduction, Learning Tasks | |2 |10 minutes |Brainstorming |Definition of Sulphonamides. | | | |Presentation | | |3 |40 minutes |Presentation |Chemical Structure of Sulphonamides.| |4 |45 minutes | Group |Structure – Activity Relationship of| | | |discussion |Sulphonamides. | | | |Presentation | | |5 |10 minutes |Presentation |Key Points | | 6 |10 minutes |Presentation |Evaluation | SESSION CONTENTS. STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify. ASK students if they have any questions before continuing. STEP 2: Definition of Sulphonamides (10 minutes). |Activity: Brainstorming (5 minutes) | | | |Ask students to brainstorm on the following question: | | | |What are Sulphonamides? | | | |ALLOW few students to respond. | | | |WRITE their responses on the flip chart/ board. | | | |CLARIFY and SUMMARISE by using the table below | Sulphonamides are antibacterial agents which acts against cell metabolism (antimetabolites). Sulfonamides: • Once known as ‘wonder drug’. • Once mainstays of antimicrobial chemotherapy. • The relative cheapness of the sulphonamides is one of their most attractive features and accounts for much of their persistence in the market. STEP 3: Chemical Structure of Sulphonamides (40 minutes). • Sulphonamides are composed of a sulphur atom that has two sets of double bonds to two oxygen atoms, a carbon-based side group, and a nitrogen atom bonded to the sulphur itself. • In organic chemistry, an amide contains a carbonyl group bonded to a nitrogen atom. • Sulphonamides are similar, but the carbonyl group is replaced with sulfone sulphur with two oxygen atoms). • That's why the term 'amide' appears in the name. [pic] General structure of amides and sulphonamides. • The 'R' groups in the figure simply represent any generic carbon-based side chain and could be virtually anything. • For example, R could be a methyl group, a benzene ring, an alkane ring, or some other group. • If the nitrogen atom contains two hydrogens, the sulphonamide is classified primary, if there is one hydrogen it's secondary, and if no hydrogens are present on the nitrogen, it's a tertiary sulphonamide [pic] Structures of primary, secondary, and tertiary sulphonamides. Important Sulfonamide Derivatives • Sulfamethoxazole • Sulfamethoxazole is another sulfonamide with antibacterial activity and is commonly used in the treatment of urinary tract infections and bronchitis. • Sulfamethoxazole looks very similar to sulfanilamide in terms of its structure but contains an extra ring system called an oxazole. [pic] STEP 4: Structure – Activity Relationship of Sulphonamides (45 minutes). |Activity: Small Group Discussion (20 minutes). | | | |DIVIDE students into small manageable groups. | | | |ASK students to discuss on the following question. | |What is the importance of SAR of sulphonamides? | | | |ALLOW students to discuss for 15 minutes. | | | |ALLOW few groups to present and the rest to add points not mentioned. | | | |CLARIFY and SUMMARIZE by using the contents below | The synthesis of a large number of sulphonamide analogues led to the following conclusions [pic] Sulfonamides analogues • The para -amino group is essential for activity and must be unsubstituted (i.e. R1=H). The only exception is when R1=acyl (i.e. amides). • The amides themselves are inactive but can be metabolized in the body to regenerate the active compound. • Thus, amides can be used as sulfonamide prodrugs. • Incorporation of other groups (halogen, alkyl, etc.) destroys the activity. [pic] Metabolism of acyl group to regenerate active compound • The aromatic ring and the sulphonamide functional group are both required. • Total loss of antibacterial activity occurs if sulphonamide group is replaced by other acidic groups (sulfonic, phosphoric etc.) • The aromatic ring must be para -substituted only. • Extra substitution eliminates activity for steric reasons. • The sulfonamide nitrogen must be primary (sulfanilamide) or secondary (acidic proton is essential for antibacterial activity). • R2 is the only possible site that can be varied in sulfonamides. Sulphonamide analogues • R2 can be varied by incorporating a large range of heterocyclic or aromatic structures, which affects the extent to which the drug binds to plasma protein. • This in turn controls the blood levels of the drug such that it can be short acting or long acting. • Thus, a drug which binds strongly to plasma protein will be slowly released into the blood circulation and will be longer lasting. • R2 affects pharmacokinetic properties but not the pharmacodynamics properties. Sulfonamide analogues with reduced toxicity • Changing the nature of the group R2 has also helped to reduce the toxicity of some sulfonamides. • The primary amino groups of sulfonamides are acetylated in the body and the resulting amides have reduced solubility which can lead to toxic effects. • For example, the metabolite formed from sulfathiazole is poorly soluble and can prove fatal if it blocks the kidney tubules [pic] Insoluble • It was discovered that the solubility problem could be overcome by replacing the thiazole ring in sulfathiazole with a pyrimidine ring to give sulfadiazine. [pic] • Its metabolites will also be water soluble • The reason for the improved solubility lies in the acidity of the sulphonamide NH proton. • In sulfathiazole, this proton

Pharmaceutical Sciences Notes, PST Level 5 Semester 1, PST NTA Level 5, PST05106 Pharmaceutical Organic Chemistry

Structure – Activity Relationship of Aspirin – PST05106 Pharmaceutical Organic Chemistry

NTA Level 5 • Semester 1 • PST05106 Structure – Activity Relationship of Aspirin Pharmaceutical Organic Chemistry • Source Session/Topic 30 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 30: Structure – Activity Relationship of Aspirin. Total Session Time: 120 minutes Prerequisites None Learning Tasks By the end of this session students are expected to be able to: • Define Aspirin • Explain Chemical structure of aspirin • Explain the structure – activity relationship of aspirin Resources Needed: • Flip charts, marker pens, and masking tape. • Black/white board and chalk/whiteboard markers. SESSION OVERVIEW |Step |Time |Activity/ |Content | | | |Method | | |1 |05 minutes |Presentation |Introduction, Learning Tasks | |2 |10 minutes |Brainstorming |Definition of Aspirin | | | |Presentation | | |3 |40 minutes |Presentation |Chemical Structure of Aspirin | |4 |45 minutes |Group |Structure – Activity Relationship of| | | |discussion |Aspirin | | | |Presentation | | |5 |10 minutes |Presentation |Key Points | | 6 |10 minutes |Presentation |Evaluation | SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify. ASK students if they have any questions before continuing. STEP 2: Definition of Aspirin (10 minutes). |Activity: Brainstorming (5 minutes) | | | |Ask students to brainstorm on the following question: | | | |What is Aspirin? | | | |ALLOW few students to respond | | | |WRITE their responses on the flip chart/ board | | | |CLARIFY and SUMMARISE by using the table below | • Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) effective in treating fever, pain, and inflammation in the body. • It also prevents blood clots (i.e., is antithrombotic). As a group, NSAIDs are non-narcotic relievers of mild to moderate pain of many causes, including o Headaches, o Injury, o Menstrual cramps, o Arthritis, and other musculoskeletal conditions • Other members of this class include o ibuprofen (Motrin), o indomethacin (Indocin), o nabumetone (Relafen) and several others. • They all work by reducing the levels of prostaglandins, chemicals that are released when there is inflammation and that cause pain and fever. • NSAIDs block the enzyme that makes prostaglandins (cyclooxygenase), resulting in lower concentrations of prostaglandins. • As a consequence, inflammation, pain, and fever are reduced. • Inhibition of prostaglandins also reduces the function of platelets and the ability of blood to clot. STEP 3: Chemical Structure of Aspirin (40 minutes). • Acetylsalicylic acid –or, as it is more commonly known, aspirin –has a simple chemical structure. • It consists of a small number of carbons, hydrogen and oxygen atoms that form the chemical bonding patterns shown below. • Aspirin Acetylsalicylic acid C9H8O4 [pic] • One of the best-known aromatic acetates is acetylsalicylic acid, or aspirin, which is prepared by the esterification of the phenolic hydroxyl group of salicylic acid. [pic] • Aspirin possesses a number of properties that make it the most often recommended drug which are; o analgesia, leading to pain relief o anti-inflammatory effect, providing some relief from the swelling associated with arthritis and minor injuries. o antipyretic effect, which means it reduces fever. Synthesis • The key compound in the synthesis of aspirin, salicylic acid, is prepared from phenol by Kolbe synthesis (also known as the Kolbe- Schmitt reaction) whereby sodium phenoxide is heated with CO2 under pressure and the reaction mixture is subsequently acidified to yield salicylic acid. [pic] STEP 4: Structure – Activity relationship of Aspirin (45 minutes). |Activity: Small Group Discussion (20 minutes) | | | |DIVIDE students into small manageable groups. | | | |ASK students to discuss on the following question | |What is the importance of SAR of aspirin? | | | |ALLOW students to discuss for 15 minutes. | | | |ALLOW few groups to present and the rest to add points not mentioned. | | | |CLARIFY and SUMMARIZE by using the contents below | • Despite the vast effort that has been expended in the search to find a “better” aspirin—that is, one possessing fewer GI side effects, but a greater potency and a longer duration of action yet is inexpensive and an antipyretic, analgetic, and anti-inflammatory agent that is overall superior to aspirin—none has yet to be discovered. The following structure–activity relationships have been established: [pic] • Possesses a free carboxylic acid (COOH) for an ionic interaction with the positively charged arginine residue at the active site of the cyclooxygenases (i.e., Arg-120 in COX-1 or Arg-106 in COX-2 isozymes). • This acidic moiety is further linked to an aromatic (or heteroaromatic) ring for binding to either the Δ5-double-bond or Δ8- double-bond binding regions. • The active moiety appears to the salicylate anion. • The side effects of aspirin, particularly the GI effects, appear to be associated with the carboxylic acid function. • Reducing the acidity of this group (e.g., converting to an amide, salicylamide) maintains the analgesic actions of salicylic acid derivatives but eliminates the anti-inflammatory properties. • Substitution on either the carboxyl or phenolic hydroxyl groups may affect potency and toxicity. • Benzoic acid itself has only weak anti-inflammatory activity. • Placing the phenolic hydroxyl group meta or para to the carboxyl group abolishes this activity. • Substitution of halogen atoms on the aromatic ring enhances potency and toxicity. • Substitution of aromatic rings at the 5-position of salicylic acid increases anti-inflammatory activity (e.g., diflunisal). STEP 5: Key Points (10 minutes). • Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) effective in treating fever, pain, and inflammation in the body. • Aspirin possesses a free carboxylic acid (COOH) for an ionic interaction with the positively charged arginine residue at the active site of the cyclooxygenases. • Modification of carboxylic acid function group of aspirin may help in reducing its GI toxicity. STEP 6: Evaluation (10 minutes). • What is Aspirin? • Draw chemical structure of aspirin. • What

Pharmaceutical Sciences Notes, PST Level 5 Semester 1, PST NTA Level 5, PST05106 Pharmaceutical Organic Chemistry

Structure – Activity Relationship of Paracetamol – PST05106 Pharmaceutical Organic Chemistry

NTA Level 5 • Semester 1 • PST05106 Structure – Activity Relationship of Paracetamol Pharmaceutical Organic Chemistry • Source Session/Topic 31 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 31: Structure – Activity Relationship of Paracetamol. Total Session Time: 120 minutes Prerequisites None Learning Tasks By the end of this session students are expected to be able to: • Define Paracetamol • Explain Chemical structure of paracetamol • Explain the structure – activity relationship of paracetamol Resources Needed: • Flip charts, marker pens, and masking tape. • Black/white board and chalk/whiteboard markers. SESSION OVERVIEW |Step |Time |Activity/ |Content | | | |Method | | |1 |05 minutes |Presentation |Introduction, Learning Tasks | |2 |10 minutes |Brainstorming |Definition of Paracetamol | | | |Presentation | | |3 |40 minutes |Presentation |Chemical Structure of Paracetamol | |4 |45 minutes |Group |Structure – Activity Relationship of| | | |discussion |Paracetamol | | | |Presentation | | |5 |10 minutes |Presentation |Key Points | | 6 |10 minutes |Presentation |Evaluation | SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes). READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing. STEP 2: Definition of Paracetamol (10 minutes). |Activity: Brainstorming (5 minutes) | | | |Ask students to brainstorm on the following question: | | | |What is paracetamol? | | | |ALLOW few students to respond. | | | |WRITE their responses on the flip chart/ board. | | | |CLARIFY and SUMMARISE by using the table below | • Paracetamol also known as acetaminophen is an analgesic antipyretic derivative of acetanilide. • Acetaminophen has weak anti-inflammatory properties and is used as a common analgesic, but may cause liver, blood cell, and kidney damage. • Acetaminophen is a p-aminophenol derivative with analgesic and antipyretic activities. • Although the exact mechanism through which acetaminophen exert its effects has yet to be fully determined, acetaminophen may inhibit the nitric oxide (NO) pathway mediated by a variety of neurotransmitter receptors including N-methyl-D-aspartate (NMDA) and substance P, resulting in elevation of the pain threshold. • The antipyretic activity may result from inhibition of prostaglandin synthesis and release in the central nervous system (CNS) and prostaglandin-mediated effects on the heat-regulating center in the anterior hypothalamus. • Acetaminophen is a widely used nonprescription analgesic and antipyretic medication for mild-to-moderate pain and fever. • Harmless at low doses, acetaminophen has direct hepatotoxic potential when taken as an overdose and can cause acute liver injury and death from acute liver failure. • Even in therapeutic doses, acetaminophen can cause transient serum aminotransferase elevations. Summary • Paracetamol (acetaminophen) is a pain reliever and a fever reducer. • Paracetamol is used to treat many conditions such as headache, muscle aches, arthritis, backache, toothaches, colds, and fevers. It relieves pain in mild arthritis but has no effect on the underlying inflammation and swelling of the joint. STEP 3: Chemical Structure of Paracetamol (40 minutes). • The acetaminophen has the IUPAC name N-(4-hydroxyphenyl) acetamide and its chemical formula us C8H9NO2 and its extended formula is HOC6H4NHCOCH3. • Its molar mass is 151.165 g mol-1. • The molecule is formed by an aromatic phenyl ring, which has two substituents in position -para (1,4). • The first substituent is an amide group (acetamide) and the second is a hydroxy group (-OH). • The molecule is planar with 7 carbon atoms with sp2 hybridization. • Its chemical structure can be written as below, in the common representations used for organic molecules. [pic] STEP 4: Structure – Activity relationship of Paracetamol (45 minutes) |Activity: Small Group Discussion (20 minutes) | | | |DIVIDE students into small manageable groups | | | |ASK students to discuss on the following question. | |What is the importance of SAR of paracetamol? | | | | | |ALLOW students to discuss for 15 minutes. | | | |ALLOW few groups to present for 5 minutes and the rest to add points | |not mentioned. | | | |CLARIFY and SUMMARIZE by using the contents below | • Paracetamol consists of a benzene ring core, substituted by one hydroxyl group and the nitrogen atom of an amide group in the para (1,4) pattern. • The amide group is acetamide (ethanamide). • It is an extensively conjugated system, as the lone pair on the hydroxyl oxygen, the benzene pi cloud, the nitrogen lone pair, the p orbital on the carbonyl carbon, and the lone pair on the carbonyl oxygen is all conjugated. • The presence of two activating groups also makes the benzene ring highly reactive toward electrophilic aromatic substitution. • As the substituents are ortho,para-directing and para with respect to each other, all positions on the ring are more or less equally activated. • The conjugation also greatly reduces the basicity of the oxygens and the nitrogen, while making the hydroxyl acidic through delocalisation of charge developed on the phenoxide anion. • Structure and reactivity of acetaminophen accounts for its chemical properties • Based on the comparative toxicity of acetanilide and acetaminophen, aminophenols are less toxic than the corresponding aniline derivatives, although p-aminophenol itself is too toxic for therapeutic purposes. • Etherification of the phenolic function with methyl or propyl groups produces derivatives with greater side effects than with ethyl groups. Substituent • The nitrogen atoms that reduce basicity reduce activity unless that substituent is metabolically labile (e.g., acetyl). • Amides derived from aromatic acids (e.g., N-phenylbenzamide) are less active or inactive. • As indicated, both acetanilide and phenacetin are metabolized to acetaminophen. Additionally, both undergo hydrolysis to yield Aniline derivatives that produce directly, or through their conversion to hydroxylamine derivatives, significant methemoglobinemia and hemolytic anemia, which resulted in their removal from the U.S. market. STEP 5: Key Points (10 minutes) • Paracetamol also known as acetaminophen is an analgesic antipyretic derivative of acetanilide • The SAR of paracetamol may

Pharmaceutical Sciences Notes, PST Level 5 Semester 1, PST NTA Level 5, PST05106 Pharmaceutical Organic Chemistry

Biotransformation of Medicinal Products – PST05106 Pharmaceutical Organic Chemistry

NTA Level 5 • Semester 1 • PST05106 Biotransformation of Medicinal Products Pharmaceutical Organic Chemistry • Source Session/Topic 32 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 32: Biotransformation of Medicinal Products. Total Session Time: 120 minutes Prerequisites None Learning Tasks By the end of this session students are expected to be able to: • Define biotransformation • Explain metabolism of different organic compounds • Explain the importance of biotransformation Resources Needed: • Flip charts, marker pens, and masking tape. • Black/white board and chalk/whiteboard markers. SESSION OVERVIEW |Step |Time |Activity/ |Content | | | |Method | | |1 |05 minutes |Presentation |Introduction, Learning Tasks | |2 |10 minutes |Brainstorming |Definition of Biotransformation | | | |Presentation | | |3 |60 minutes |Presentation |Metabolism of Organic Compounds | |4 |25 minutes |Group |Importance of Biotransformation | | | |discussion | | | | |Presentation | | |5 |10 minutes |Presentation |Key Points | | 6 |10 minutes |Presentation |Evaluation | SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing. STEP 2: Definition of Biotransformation (10 minutes). |Activity: Brainstorming (5 minutes) | | | |Ask students to brainstorm on the following question: | | | |What is Biotransformation? | | | |ALLOW few students to respond. | | | |WRITE their responses on the flip chart/ board. | | | |CLARIFY and SUMMARISE by using the table below | • Biotransformation is Chemical alteration of the drug in body that converts non-polar or lipid soluble compounds to polar or lipid insoluble compounds. OR • Biochemical alteration of chemicals such as (but not limited to) nutrients, amino acids, toxins, and drugs in the body. • It is also needed to render non-polar compounds polar so that they are not reabsorbed in renal tubules and are excreted. • The body typically deals with a foreign compound (DRUGS) by making it more water-soluble, to increase the rate of its excretion through the urine. STEP 3: Metabolism of Organic Compounds (60 minutes). • Termination of drug effect is by the process of drug elimination which involves mainly 2 processes: one of them is drug metabolism. • Metabolism is predominantly done in the liver due to its richness in enzymes • The enzymes that are responsible for drug metabolism in the liver are; o Microsomal mixed function oxidases (MFOs) system involved. o Cytochrome P450 enzymes play important role. • Other organs responsible for drug metabolism are; o Lungs o Kidney o Intestine o Placenta o Skin o Brain o Testes o Muscle o Spleen • Metabolism of drugs makes them: o More polar o Ionizable o Water soluble to enhance renal excretion o More active (for pro drugs) Drug Metabolism in the Liver • There are two phases of drug metabolism in the liver. • Phase I reaction • Phase II reaction PHASE I REACTIONS • A polar group is introduced/ unmasked to make the drug molecule more water-soluble & less active to be excreted. • Reactions are non-synthetic in nature. • The majority of metabolites are generated by a common hydroxylating enzyme system known as Cytochrome P450. o Oxidation o Reduction o Hydrolytic cleavage o Dealkylation o Ring cyclization o N-carboxylation o Dimerization o Transamidation o Isomerization o Decarboxylation • Oxidation of aromatic carbon atoms (aromatic hydroxylation): [pic] • Oxidation of olefins (C=C bonds): o Oxidation of non-aromatic C=C bonds is analogous to aromatic hydroxylation. i.e. it proceeds via formation of epoxides to yield 1,2- dihydrodiols [pic] • Oxidation of Benzylic Carbon Atoms o Carbon atoms attached directly to the aromatic ring are hydroxylated. [pic] • Oxidation of Allylic carbon Atoms o Carbon atoms adjacent to Olefinic double bonds (are allylic carbon atoms) also undergo hydroxylation in a manner similar to Benzylic Carbons. [pic] • Oxidation of Carbon Atoms Alpha to Carbonyls and Imines o Several Benzodiazepines contain a carbon atom (C-3) alpha to both Carbonyl (C=0) and imino (C=N) function which readily undergoes Hydroxylation. [pic] • Oxidation of Aliphatic Carbon Atoms (Aliphatic Hydroxylation) o Terminal hydroxylation of methyl group yields primary alcohols which undergoes further oxidation to aldehydes and then to carboxylic acid. [pic] • Oxidation of Alicyclic Carbon Atoms (Alicyclic Hydroxylation) o Cyclohexane (alicyclic) and piperidine (non-aromatic heterocyclic) rings are commonly found in a number of molecules. o Such rings are generally hydroxylated at C-3 or C-4 positions. [pic] • Oxidation Of Carbon-Heteroatom Systems o Biotransformation of C-N, C-0 & C-S system proceed in one of the two ways: ▪ Hydroxylation of carbon atom attached to the heteroatom and subsequent cleavage at carbon-heteroatom bond. E.g. N-, O- & S- dealkylation, oxidative deamination & desulfuration. ▪ Oxidation of the heteroatom itself. E.g. N- & S- oxidation. • Oxidation of Carbon-Nitrogen System o N-DEALKYLATION: ▪ Mechanism of N-dealkylation involve oxidation of α-carbon to generate an intermediate carbinolamine which rearranges by cleavage of C-N bond to yield the N dealkylated product and the corresponding carbonyl of the alkyl group. [pic] ▪ A tertiary nitrogen attached to different alkyl groups undergoes dealkylation by removal of smaller alkyl group first. Example: o 2º aliphatic amine e.g. Methamphetamine. o 3º aliphatic amine e.g. imipramine o 3º alicyclic amine e.g. hexobarbital o Amides e.g. Diazepam o N-HYDROXYLATION: ▪ Converse to basic compounds that form N-oxide, N- hydroxy formation is usually displayed by non-basic nitrogen atoms such as amide Nitrogen. [pic] • Oxidation of Carbon-Sulfur Systems o S-DEALKYLATION: ▪ The mechanism of S-Dealkylation of thioethers is analogous to N- dealkylation .IT proceed via α-carbon hydroxylation. ▪ The C-S bond cleavage results in formation of a thiol and a carbonyl product. [pic] • Desulfuration: o This reaction also involves cleavage of carbon-sulfur bond (C=S). o The product is the one with C=0 bond. o Such a desulfuration reaction is commonly observed in thioamides such as thiopental [pic]

Pharmaceutical Sciences Notes, PST Level 5 Semester 2, PST NTA Level 5, PST05207 Quality Assurance of Pharmaceutical Products

Introduction to Good Manufacturing Practices – PST05207 Quality Assurance of Pharmaceutical Products

NTA Level 5 • Semester 2 • PST05207 Introduction to Good Manufacturing Practices Quality Assurance of Pharmaceutical Products • Source Session/Topic 1 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 1: Introduction to Good Manufacturing Practices: Total Session Time: 120 minutes Prerequisites • None Learning Tasks By the end of this session students are expected to be able to: • Give the overview of Good Manufacturing Practice • Define GMP • List principles of Good Manufacturing Practice • Explain the importance of Good Manufacturing Practice in pharmaceutical Manufacturing Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board and chalk/whiteboard markers • LCD projector and computer SESSION OVERVIEW Activity/ Step Time Content Method 1 05 minutes Presentation Introduction, Learning Tasks 2 10 minutes Presentation Overview of Good Manufacturing Practice 3 05 minutes Presentation Definition of GMP 30 minutes Brainstorming 4 Principles of GMP Presentation 60 minutes Importance of GMP in pharmaceutical 5 Presentation Manufacturing 05 minutes Presentation Key points 6 05 minutes Presentation 7 Evaluation 1 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing. STEP 2: Overview of Good Manufacturing Practice (10 minutes) • The first World health organization (WHO) drafts text on good manufacturing practices (GMP) was prepared in 1967 by a group of consultants at the request of the Twentieth World Health Assembly. • In 1969, when the World Health Assembly recommended the first version of the WHO Certification Scheme on the Quality of Pharmaceutical Products Moving in International Commerce, it accepted at the same time the GMP text as an integral part of the Scheme. • The guide to GMP shall be used as a standard to justify GMP status, which constitutes one of the elements of the WHO Certification Scheme on the Quality of Pharmaceutical Products Moving in International Commerce, through the assessment of applications for manufacturing authorizations and as a basis for the inspection of manufacturing facilities. • It may also be used as training material for government drug inspectors, as well as for production, quality control and quality assurance personnel in the industry. STEP 3: Definition of Good Manufacturing Practices (5 minutes) • Good Manufacturing Practices o Good Manufacturing Practice is that part of Quality Assurance which ensures that pharmaceutical products are consistently produced and controlled to the quality standards appropriate to their intended use and as required by the marketing authorization or product specification. QUALITY ASSURANCE Good Manufacturing Practices QUALITY CONTROL (GMP) 2 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 STEP 4: Principles of GMP (30 minutes) Activity: Brainstorming (5 minutes) ASK students to brainstorm on the following question • What are the principles of GMP? ALLOW few students to respond WRITE their responses on the flip chart/ board CLARIFY and SUMMARISE by using the content below • The following are the Principles of Good Manufacturing Practices: GMP is concerned with both production and quality control. The basic principles /essential elements are: o Quality assurance o Good manufacturing practices for pharmaceutical products o Sanitation and hygiene o Qualification and validation o Complaints o Product recalls o Contract production and analysis o Self-inspection and quality audits o Personnel o Training o Personal hygiene o Premises o Equipment o Materials o Documentation o Good practices in production o Good practices in quality control 3 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 STEP 5: Importance of GMP in pharmaceutical manufacturing (60minutes) Activity: Buzzing (10 minutes) ASK students to pair up and buzz on the following question for 2 minutes •What are the importances of GMP in pharmaceutical manufacturing? ALLOW few pairs to respond and let other pairs to add on points not mentioned WRITE their response on the flip chart/board CLARIFY and SUMMARIZE by using the content below • Manufacture of pharmaceutical products involve operations of purchase of materials, production, quality control, release, storage, shipment of finished products and the related controls. Such operations need to be carried out according to Good Manufacturing Practices (GMP) that forms an important part of a comprehensive system of quality assurance. Adherence to GMP ensures that pharmaceutical products are manufactured to meet quality standards required for their intended use. • Good manufacturing practice is that part of quality assurance which ensures that products are consistently produced and controlled to the quality standards appropriate to their intended use and as required by the marketing authorization. • GMP is aimed primarily at diminishing the risks inherent in any pharmaceutical production. • Such risks are essentially of two types: cross-contamination (in particular of unexpected contaminants) and mix-ups (confusion) caused by, for example, false labels being put on containers. It is required that: o All manufacturing processes are clearly defined, systematically reviewed in the light of experience, and shown to be capable of consistently manufacturing pharmaceutical products of the required quality that comply with their specifications; o Qualification and validation are performed. o All necessary resources are provided, including ,  Appropriately qualified and trained personnel.  Adequate premises and space.  Suitable equipment and services.  Appropriate materials, containers and labels  Approved procedures and instructions.  Suitable storage and transport.  Adequate personnel, laboratories and equipment for in- process o Instructions and procedures are written in clear and unambiguous language specifically applicable to the facilities provided. 4 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 o Operators are trained to carry out procedures correctly. o Records covering manufacture and distribution, which enable the complete history of a batch to be traced, are retained in a comprehensible and accessible form. o The proper storage and distribution of the products minimizes any risk to their quality. o A system

Pharmaceutical Sciences Notes, PST Level 5 Semester 2, PST NTA Level 5, PST05207 Quality Assurance of Pharmaceutical Products

Components of GMP Total Session Time: 120 minutes – PST05207 Quality Assurance of Pharmaceutical Products

NTA Level 5 • Semester 2 • PST05207 Components of GMP Total Session Time: 120 minutes Quality Assurance of Pharmaceutical Products • Source Session/Topic 2 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 2: Components of GMP Total Session Time: 120 minutes Prerequisites • None Learning Tasks By the end of this session students are expected to be able to: • List components of GMP • Explain General premises requirements of GMP Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board, chalk and whiteboard markers • Computer and LCD Projector SESSION OVERVIEW Activity/ Step Time Content Method 1 05 minutes Presentation Introduction, Learning Tasks 2 05 minutes Presentation Overview of GMP Components 3 20 minutes Presentation Components of GMP 80 minutes Presentation 4 General Premise Requirements of GMP Group Discussion 5 05 minutes Presentation Key points 05 minutes Presentation 6 Evaluation 7 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing. STEP 2: Overview of GMP Components (5 minutes) • Good manufacturing practice (GMP) is a vital component of quality assurance which helps to ensure that pharmaceutical products are consistently produced with the quality standards appropriate for their intended use • GMP defines quality measures for both production and quality control and defines general measures to ensure that processes necessary for production and testing are clearly defined , validated reviewed and documented and that the personnel, premises and material are suitable for the production of pharmaceuticals and biological including vaccines. STEP 3: Components of GMP (20 minutes) The following are components of GMP: • Premises of good design, which are regularly monitored. • Equipment of appropriate design and which are well maintained. • Personnel who are well trained and motivated. • Quality control of raw materials. • Quality control of finished products • Written procedures & other documentation • Packaging and labelling control. STEP 4: General Premise Requirements (80 minutes) Activity: Brainstorming (5minutes) ASK students to brainstorm on the following question for 5 minutes • What is a premise as in regards to GMP? ALLOW students to brain storm for 5minutes WRITE their response on the flip chart/board CLARIFY and SUMMARIZE by using the content below 8 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 • By definition Premises include land, buildings, structures, basements and vessels and in relation to any building includes a part of a building and any cartilage, forecourt, yard, or place of storage used in connection with building or part of that building; and in relation to ''vessel'', means ship, boat, air craft, and includes a carriage or receptacle of any kind, whether open or closed. (TFDC Act 2003). • Premises requirements: o The land and buildings where the manufacturing operations are located must contribute towards the quality of the products. They do this by avoiding the risks of contamination, permitting effective cleaning and maintenance, minimizing the build- up of dirt and dust and preventing quality defects. . o The geography of the chosen location can have a considerable impact upon the design of facilities. Is the location subject to earthquake hazards? Does it experience flooding regularly – during the monsoon season? What precautions need to be taken regarding continuity of supply of services? o The climate of the area is also important. If the company will be handling, for example, gelatine capsules then humidity are of great concern. If the company has a lot of goods requiring temperature or humidity controls in transport, and the goods have to sit on the dockside for weeks waiting for a boat to arrive, there may be a problem with the quality of the products. The company may need to rent temperature-controlled storage. If it does, how will it check the quality of that storage? • The factory may have to seek some expensive design solutions to overcome the problems that arise. Does the process make a lot of noise, for example? If it does and the location is close to neighbours, then the company may be forced into expensive soundproofing. • The neighbourhood is also important. If the company is to be located next to a steel mill then the design precautions that it will have to take, and the level of maintenance that it will have to undertake, will be very different than if it is in a rural setting. If the neighbours change, the company will need to take appropriate measures to handle the situation correctly. • The company is also required to take measures that prevent the factory polluting the surrounding area with product or by-products from its manufacturing processes. • A site inspection is useful before building commences to ensure that the area is suitable for the construction of a pharmaceutical factory • How do we achieve good conditions in the factory? o The layout and design of premises must aim to minimize the risk of errors and permit effective cleaning and maintenance in order to avoid cross-contamination, build-up of dust or dirt, and, in general, any adverse effect on the quality of products. o Premises should be carefully maintained, and it should be ensured that repair and maintenance operations do not present any hazard to the quality of products. o Electrical supply, lighting, temperature, humidity and ventilation should be appropriate and such that they do not adversely affect, directly or indirectly, either the pharmaceutical products during their manufacture and storage, or the accurate functioning of equipment. 9 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 o Premises should be designed to ensure the logical flow of materials and personnel corresponding to the sequence of the operations and to the requisite cleanliness levels. o Interior

Pharmaceutical Sciences Notes, PST Level 5 Semester 2, PST NTA Level 5, PST05207 Quality Assurance of Pharmaceutical Products

GMP -Personnel requirements – PST05207 Quality Assurance of Pharmaceutical Products

NTA Level 5 • Semester 2 • PST05207 GMP -Personnel requirements Quality Assurance of Pharmaceutical Products • Source Session/Topic 3 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 3: GMP -Personnel requirements Total Session Time: 120 minutes Prerequisites • None Learning Tasks By the end of this session students are expected to be able to: • List general possible issues related to personnel in GMP • List general principles related to personnel in GMP • Explain requirements for key personnel in GMP • Review the training of personnel in GMP Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board and chalk/whiteboard markers • Pointer • LCD Projector and computer. SESSION OVERVIEW Activity/ Step Time Content Method 1 05 minutes Presentation Introduction, Learning Tasks 35 minutes Presentation General Possible Issues Related to Personnel 2 Buzzing in GMP 30 minutes General Principles Related to Personnel in 3 Presentation GMP 30 minutes Presentation 4 Requirements for Key Personnel in GMP Brainstorming 5 10 minutes Presentation Reviewing the Training for Personnel in GMP 6 05 minutes Presentation Key Points 7 05 minutes Presentation Evaluation 13 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing. STEP 2: General Possible Issues Related to Personnel in GMP ( 35 minutes) Activity: Buzzing (5 minutes) ASK students to pair up and buzz on the following question for 2 minutes • What are general possible issues related to personnel in GMP? ALLOW few pairs to respond and let other pairs to add on points not mentioned WRITE their response on the flip chart/board CLARIFY and SUMMARIZE by using the content below • The general possible issues related to personnel in GMP are: o In a company the issues will be around a lack of skills and resources to comply with all the requirements of GMP:  Limited staff numbers may mean that people are under pressure to perform. They may be trying to do too much. There may be a lack of deputies during times of illness or holidays.  Recruited staff may have inadequate qualifications.  Recruited staff may have inadequate experience or experience in an inappropriate area. Sometimes the owner recruits relatives who are inadequately qualified or experienced.  The owner may interfere with quality decisions, particularly if orders are required urgently or are very valuable. Senior staff may have difficulty in combating this, since it may cost them their jobs.  Smaller companies may have no means to develop training materials to educate their staff in the requirements of GMP. They do not become members of the local manufacturers‟ association because of cost. They do not then have access to training programmes that are available through the association.  Subsidiaries of multinational companies may claim that company procedures or standards take precedence over local legislation. If this is claimed, it will be most unusual since all multinationals require local companies to conform first to local legislation. It will be worth exploring with the company what benefits are obtained by not conforming to local legislation.  Large organizations often move people around through promotion, training, recruitment or relocation. In so doing they can lose sight of the requirements of GMP. Managers can be promoted into positions for which they are not qualified or experienced. 14 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2  Companies may not keep adequate training records even though people are apparently undergoing training.  As with small companies, large companies may have personnel policies that penalize people. The problem is that if people are not going to be paid when sick or injured, they may work on under circumstances that create a risk to the product. STEP 3: General Principles Related to Personnel in GMP ( 30 minutes) The following are principles related to personnel in GMP: • For successful and good quality pharmaceutical production, it is essential to have people with sufficient knowledge and experience to undertake the work. They must have the authority and the means to do that work, and there must be enough of them available to carry out tasks effectively. • It is most important that the people that are recruited are selected from a group that can meet the requirements. • It is not recommended to recruit people to work in manufacturing areas if they are unable to read the instructions for their safety and for product quality. A medical examination should be included during the recruitment processes. Operators working with cytotoxic products may need blood tests at the time of recruitment and at six monthly intervals thereafter. • Operators who will work on visual inspection processes should also undertake an eye test at the time of recruitment with a regular check on a periodic basis afterwards. • A major and most common problem is that of insufficient people available to do the work. It is of little value having just one person well qualified and experienced, with no backup staff. What then happens in the case of sickness or holiday? This can be a very difficult area, and one which is harder for smaller companies than a multinational company or similar. • Another issue that often surfaces is the employment of a well-qualified, but inexperienced person to manage, for example, quality. An illustration of this is the recruitment by the owner of a small company of a relative — who is newly qualified, but completely inexperienced to run a laboratory or manufacturing area. • The duties incumbent upon any one individual should not be so extensive that he/she cannot cope, resulting in a risk to quality of the product. • Staff must have a clear job description which tells them

Pharmaceutical Sciences Notes, PST Level 5 Semester 2, PST NTA Level 5, PST05207 Quality Assurance of Pharmaceutical Products

GMP Requirements on Raw Materials – PST05207 Quality Assurance of Pharmaceutical Products

NTA Level 5 • Semester 2 • PST05207 GMP Requirements on Raw Materials Quality Assurance of Pharmaceutical Products • Source Session/Topic 4 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 4: GMP Requirements on Raw Materials Total Session Time: 120 minutes Prerequisites • None Learning Tasks By the end of this session students are expected to be able to: • Define pharmaceutical raw material • Mention types of raw materials used in pharmaceutical manufacturing • Explain GMP requirements for pharmaceutical raw materials Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board and chalk/whiteboard markers • LCD projector and computer SESSION OVERVIEW Activity/ Step Time Content Method 1 05 minutes Presentation Introduction, Learning Tasks 15 minutes Presentation Definition of Pharmaceutical Raw Material 2 50 minutes Types of Pharmaceutical Raw Materials Used Presentation 3 in Pharmaceutical Manufacturing discussion 30 minutes GMP Requirements for Pharmaceutical Raw 4 Presentation Materials 10 minutes Presentation 5 Key Points 6 10 minutes Presentation Evaluation 20 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing. STEP 2: Definition of Pharmaceutical Raw Materials (15 minutes). Pharmaceutical raw materials generally are substrates or elements which are used for manufacturing different types of drugs, and basically categorized into three major types which are: Raw Material of API: Any substance or mixture of substances intended to be used in the manufacture of a pharmaceutical dosage form and that, when so used, becomes an active ingredient of that pharmaceutical dosage form. Such substances are intended to furnish pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease or to affect the structure and function of the body. Main thing is that Accuracy and Precision are must for the raw materials which is used for making the API. Raw Material of Expedients: is a substance formulated alongside the active ingredient of a medication, included for the purpose of long-term stabilization, bulking up solid formulations that contain potent active ingredients in small amounts (thus often referred to as "bulking agents", "fillers", or "diluents"), or to confer a therapeutic enhancement on the active ingredient in the final dosage form, such as facilitating drug absorption, reducing viscosity, or enhancing solubility. Excipients can also be useful in the manufacturing process, to aid in the handling of the active substance concerned such as by facilitating powder flowability or non- stick properties, in addition to aiding in vitro stability such as prevention of denaturation or aggregation over the expected shelf life. The selection of appropriate excipients also depends upon the route of administration and the dosage form, as well as the active ingredient and other factors Raw Material of Packaging: Raw material which is used in making most of the packaging involve plastic & polymers, glass, paper, aluminum foil and paper boards 21 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 STEP3:Types of Raw Materials Used in Pharmaceutical Manufacturing (50 minutes) Activity: Small Group Discussion ( 10 minutes) DIVIDE students into manageable groups ASK students to discuss in groups on the following questions • What are major types of raw materials used in pharmaceutical manufacturing? ALLOW students to discuss for 5 minutes ALLOW groups to present for 5 minutes CLARIFY and SUMMARIZE by using the contents below The major types of raw materials used in pharmaceutical manufacturing are • Active pharmaceutical ingredient-(API), • excipients and • Packaging materials as shown in step two of this lecture. The following are some of pharmaceutical excipients commonly used in pharmaceutical manufacturing of solid dosage forms. TABLE ONE (1) EXCIPIENTS used in solid dosage forms. Excipient Function in Working principle Examples category formulation Diluents Fillers Make up the bulk of solid Lactose, Directly unit dosage forms when drug compressible itself is inadequate to Starches, Dextrose, produce the bulk Sorbitol, Microcrystalline cellulose, Dibasic Calcium phosphate Dehydrate Binders and Impart cohesive Improves free flow Acacia, Gelatin, Starch Adhesives qualities to powdered qualities by formulation of paste, Polyvinyl material. granules to desired pyrrolidone, Glucose, hardness and size Carboxymethyl cellulose, Povidone Lubricants Reduce inter-particular Interpose a film of low shear Talc, Stearic acid, friction, prevent strength that interface Magnesium adhesion of tablet between the tableting mass stearate, Calcium material to the surface and die wall stearate, Polyethylene of dies and punches glycol, Surfactants, 22 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 facilitate easy ejection vegetable oil of tablet from die cavity and improve the rate of flow tablet granulation Glidants Improve flow Added in dry state prior Colloidal Silicone characteristics of compression, it reduces dioxide powder mixture friction between particles. (Carbosil), Asbestos free starch, Corn starch Disintergrants Facilitate breakup or Function by drawing water Starches, Clays, disintegration into the tablet, swelling it Cellulose, Cross after administration and causing the tablet to Linked polymers, burst apart Modified starches such as Primogel and Explotab, Veegum HV. Crosscarmalose, Cross Povidone, Sodium starch glycolate Coloring Impart aesthetic FD and C, D and C dyes agents ( these appearance to and lakes must be dosage form, disguising approved and off color drugs, product certified ) identification Flavors Limited to chewable Mask unpleasant taste Spray dried and other tablets/ tablets flavors, syrups etc Intended to dissolve in mouth. Sweeteners Impart sweet taste to Mannitol, Saccharin.etc the formulation; use is limited to chewable tablets Sorbents Moisture proofing Limits the fluid sorbing, Silica gel, activated taking up of liquid or gas carbon, clay etc either by adsorption or absorption in dry state Coating Protect tablet Hydroxypropylmethyl materials ingredients from cellulose (HPMC), deterioration by Synthetic polymers, moisture, help Shellac, Corn protein swallowing unpleasant Zein, Polysaccharides, tasting tablets Capslues coated by 23 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5

Pharmaceutical Sciences Notes, PST Level 5 Semester 2, PST NTA Level 5, PST05207 Quality Assurance of Pharmaceutical Products

GMP Documentations Requirements – PST05207 Quality Assurance of Pharmaceutical Products

NTA Level 5 • Semester 2 • PST05207 GMP Documentations Requirements Quality Assurance of Pharmaceutical Products • Source Session/Topic 5 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 5: GMP Documentations Requirements Total Session Time: 120 minutes Prerequisites None Learning Tasks By the end of this session students are expected to be able to: • Define documentation terms • List good documentation practices • Explain importance of Good Documentation • Explain what constitutes Good Documentation • Explain GMP documentation requirements Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board and chalk/whiteboard markers • Pointer • LCD projector and computer SESSION OVERVIEW Activity/ Step Time Content Method 1 05 minutes Presentation Introduction, Learning Tasks 2 15 minutes Presentation Definition of Documentation Terms 25 minutes Presentation 3 Good Documentation Practices Buzzing 4 15 minutes Presentation Importance of Good Documentation 5 15 minutes Presentation Constituents of Good Documentation 35 minutes GMP Documentation Requirements 6 Presentation 7 05 minutes Presentation Key points 8 05 minutes Presentation Evaluation 31 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning objectives and clarify ASK students if they have any questions before continuing. STEP 2: Definition of Documentation Terms (15minutes) Batch (or lot): A defined quantity of starting material, packaging material, or product processed in a single process or series of processes so that it is expected to be homogeneous. It may sometimes be necessary to divide a batch into a number of sub-batches, which are later brought together to form a final homogeneous batch. In the case of terminal sterilization, the batch size is determined by the capacity of the autoclave. In continuous manufacture, the batch must correspond to a defined fraction of the production, characterized by its intended homogeneity. The batch size can be defined either as a fixed quantity or as the amount produced in a fixed time interval. “Manufacturing” includes all operations of receipt of materials, production, packaging, repackaging, labelling, relabeling, quality control, release, storage and distribution of APIs and the related controls Master Formula: A document or set of documents specifying the starting materials with their quantities and the packaging materials, together with a description of the procedures and precautions required to produce a specified quantity of a finished product as well as the processing instructions, including the in-process controls. Master Record: A document or set of documents that serve as a basis for the batch documentation (blank batch record). ALCOA+ A commonly used acronym for „Attributable, Legible, Contemporaneous, Original and Accurate‟ which puts additional emphasis on the attributes being „Complete, Consistent, Enduring and Available‟– qualities which are implicit in the basic ALCOA principles. Backup: A backup means a copy of one or more electronic files created as an alternative in case the original data or system are lost or become unusable. Computerized System: A computerized system can create, modify, maintain, archive, retrieve or transmit electronic records. A computerized system consists of hardware, software and network components which together fulfill certain functionalities. They can also be defined as a logical entity, partially or entirely controlled by computer but may also include some equipment, utilities, sensors and actuators along with the governing procedures. Examples of such a system are Building Management System (BMS), Automated Manufacturing/Laboratory System, Document Management System, 32 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 Criterion Meaning Attributable Attributable‟ means information is captured in the record such that it is uniquely identified as executed by the originator of the data (e.g., a person and/or a computer system). Legible The terms „legible‟, „traceable‟ and „permanent‟ refer to the requirements that data are readable, understandable and allow a clear picture of the sequencing of steps or events in the record Contemporaneous is the process of documentation (on paper or electronically) at the time of the occurrence of an activity Original Original‟ data includes the first capture or capture at source of data or information and all subsequent data required to fully reconstruct the conduct of the GxP activity Accurate Accurate‟ means that data are correct, truthful, valid and reliable. complete „Complete‟ means that all data from analysis, including any data generated before a problem is observed, data generated after repeating part or all of the work, or re-analysis performed on the sample are contained in the data record Consistent „ means that all elements of the analysis, such as the sequence of events, follow on and data files are date-stamped (all processes) and time stamped (when using a hybrid or electronic system) in the expected order and such data are contained in the record. Enduring Enduring‟ means that all data have been recorded on authorized media which can be preserved for a period of time, e.g., laboratory notebooks, numbered worksheets, for which there is accountability, or electronic media. Data recorded on scrap paper or any other media which can be discarded later, e.g., backs of envelopes, laboratory coat sleeves or Post‑It notes, etc. are not considered enduring. Available Available‟ means that the complete collection of records can be accessed or retrieved for review and audit or inspection over the lifetime of the record 33 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 STEP 3: Good Documentation Practices (GDocP) (25 minutes) Activity: Buzzing (5minutes) ASK students to pair up and buzz on the following questions for 5 minutes • What is a good documentation practice? ALLOW few pairs to respond and let other pairs add on points not mentioned WRITE their response on the flip chart/board CLARIFY and SUMMARIZE by using the content below The equipments used in facility based pharmaceutical preparation Good documentation practice is an essential part of the quality assurance and such, related to all aspects of GMP” this definition is based on WHO.

Pharmaceutical Sciences Notes, PST Level 5 Semester 2, PST NTA Level 5, PST05207 Quality Assurance of Pharmaceutical Products

GMP Equipments Requirements – PST05207 Quality Assurance of Pharmaceutical Products

NTA Level 5 • Semester 2 • PST05207 GMP Equipments Requirements Quality Assurance of Pharmaceutical Products • Source Session/Topic 6 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 6: GMP Equipments Requirements Total Session Time: 120 minutes Pre-requisites • None Learning Tasks By the end of this session students are expected to be able to: • Explain the GMP requirements for equipment used in pharmaceutical manufacturing • Explain the construction features of GMP compliant equipment • Outline the basic equipment used in pharmaceutical production • Explain the calibration of equipment used in pharmaceutical production • Explain the cleaning of equipment used in pharmaceutical production • Explain the preventive maintenance of equipment used in pharmaceutical production Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board and chalk/whiteboard markers • LCD projector and computer SESSION OVERVIEW Activity/ Step Time Content Method 1 05 minutes Presentation Introduction, Learning Tasks 10 minutes Buzzing 2 General Features of Manufacturing Equipment Presentation Small group 3 35 minutes discussion GMP Requirements for Equipments Presentation 4 20 Minutes Presentation Construction of Equipment 20 minutes Basic Equipment in Pharmaceutical 5 Presentation Manufacturing 20 Minutes Calibration, Cleaning and Maintenance of 6 Presentation Equipment 7 05 minutes Presentation Key Points 8 05 minutes Presentation Evaluation 38 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2 SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing STEP 2: General Features of Manufacturing Equipment (10 minutes) Activity: Buzzing (5 minutes) ASK students to pair up and buzz on the following question for 2 minutes • What are the features of pharmaceutical manufacturing equipment? ALLOW few pairs to respond and let other pairs to add on points not mentioned WRITE their response on the flip chart/board CLARIFY and SUMMARIZE by using the content below • Equipment used in the manufacture, processing, packing or holding of a drug product must be of appropriate design, adequate size, and suitably located to facilitate operations for its intended use and for its cleaning and maintenance • Effectiveness of equipment starts at the design stage • Pharmaceutical manufacturing companies contribute indirectly in the design of equipment by providing information on requirements and feedback on existing equipment • Equipment must be located, designed, constructed, adapted and maintained to suit the operations to be carried out STEP 3: GMP Requirements for Equipments (35 minutes) Activity: Small Group Discussion (10 minutes) DIVIDE students into small manageable groups ASK students to discuss on the following question • What are the GMP requirements for equipment used in pharmaceutical production? ALLOW students to discuss for 10 minutes ALLOW few groups to present and the rest to add points not mentioned CLARIFY and SUMMARIZE by using the contents below • Pharmaceutical manufacturing equipment should meet the following requirements; o Operating criteria 39 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2  Should be adequate to meet process, size, speed and effectiveness requirements o Spare parts  Availability of spares and servicing  This can result in using different makes of an equipment in different parts of the world o Maintenance  Frequency and ease of maintenance significantly impact on productivity and even quality  Equipment break down during process could adversely affect quality  Cleanability of the equipment  Accessibility to the parts of equipment needed to be cleaned  Easy of disassembling and re-assembling the equipment o Environmental issues  Dust dissemination  Potential for contamination of other products and requiring operators to wear additional protective clothing and frequent cleaning of facility  Noise and energy use o Equipment design, size and space required for its location o Construction materials of the equipment o Process controls on the equipment  Automatic weight adjustment on tablet presses  Temperature recorders on ovens o Cost of the equipment  Base price of the equipment  Additional costs related to installation, etc. o Design and maintenance manuals  Manuals are important for validation/qualification of the equipment and maintenance programs STEP 4: Construction of Equipment (20 minutes) • Equipment layout and design must aim to minimize risks of error and permit effective cleaning and maintenance o This will avoid cross-contamination, dust and dirt-build up and any adverse effect on the quality of the product • Equipment must be installed to minimize risks of error and contamination • The construction of the equipment must meet the following features; o Surfaces  Surfaces that contact components, in-process materials or drug product should be smooth, nonreactive or absorptive  These surfaces should not alter the safety, identity, strength, quality or purity of the drug product beyond the official or other established requirements o Fixed pipework (for transfer of materials through pipelines) 40 PST 05207 Quality Assurance of Pharmaceutical Products NTA Level 5 Semester 2  All pipes used must be of right standard and specification for the material and pipeline to prevent any wrong connections and mix-ups  All pipes must be clearly labelled  Labels in all pipes should indicate contents and direction of flow  Servicing pipings and devices must be adequately marked  The use of adaptors is not recommended  Piping system should allow monitoring and testing of materials delivered in them at regular intervals o Substances required for operation of equipment  Coolants, lubricants and other substances required for operation of the equipment should not come into contact with components, drug product, containers, closures, in-process materials or drug product  Lubrication needs to be of good grade, controlled and monitored o Potential sources of contamination  Construction of equipment should be in a such a way that motors, drive belts, gears and other potential sources of lubricant contamination are located away from vessels or package openings that could result in product contamination

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