DETERMINATION OF RELATED SUBSTANCES & IMPURITIES IN DRUGS BY ICH GUIDE LINES BY M.PAUL RICHARDS.
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Transcript of DETERMINATION OF RELATED SUBSTANCES & IMPURITIES IN DRUGS BY ICH GUIDE LINES BY M.PAUL RICHARDS.
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DETERMINATION OF RELATED SUBSTANCES & IMPURITIES IN DRUGS BY ICH GUIDE LINES
BY M.PAUL RICHARDS
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INTRODUCTION
ANALYTICAL PROCEDURES. RESIDUAL SOLVENTS ICH GUIDELINES CO - SPONSORS OF ICH. WHO GOVERN ICH AREAS OF ICH GUIDE LINES. THE STATUS OF ICH GUIDE LINES.
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ANALYTICAL PROCEDURES
Suitable for detection & quantification of degradation products. (HPLC & TLC).
For determination of related substances & degradation products. Sample stored under stress conditions (light , heat, humidity,
acid/base hydrolysis & oxidation)
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Other peaks should be labelled in the chromatogram & discussed in documentation.
Quantification limit is >/ the reporting threshold. Deg.product should be compared with analytical response
of Deg.product to that of appropriate REFERENCE STD. REFERENCE STD : Control of deg .products should be
evaluated & to their Intended use.
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Should be validated for specified & unspecified conditions & used to estimate ,identify & unidentify deg.products.
Diff.used during development proposed to commercial
product should be discussed.
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RESIDUAL SOLVENTS
Determine by using C.Technique such as GC. Those describe in pharmacopoeias can be used for determination . If only class 3 solvents are present ,non specific method
used on loss on drying.
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For Isolating and Identifying process related Impurities using
MS NMR HPLC FTICR-MS LC-MS.
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ICH GUIDELINES (INTERNATIONAL CONFERENCE ON
HARMONIZATION)
DEF: This is a process by which the organising authorities of the US, European commission Japan & experts from pharmaceutical industries & the trade association in the three region are brought together to discuss about the scientific and technical aspects of PRODUCT REGISTRATION.
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OBJECTIVE
To discuss scientific & technical aspects of medicinal product registration.
Discuss b/w regulatory authorities and the pharmaceutical industry on the real and perceived differences.
To identify an area where modification in technical requirements could lead to a more economical use .
To make recommendations on practical ways. To achieve greater harmonisation in interpretation & application of
technical guidelines & requirements for registration.
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CO SPONSORS OF ICH.
EC-EU. EFPIA. MHW JPMA FDA PRMA
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FUNCTIONS.
HAS EQUAL PARTICIPATION IN THE PROCESS & EACH HAS TO SEAT ON THE STEARING COMMITTEE , WHICH OVERSEAS HARMONISATION ACTIVITIES.
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WHO GOVERN ICH
1.Six founder members of ICH. 2.OBSERVERS:
A.WHO B.EFTA
C.HPB
3.SECRETERIATES (PROVIDED BY JFPMA)
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AREAS OF ICH GIDELINES
STABILITY. ANALYTICAL VALIDATION. IMPURITIES. PHARMACOPOEIAS. BIOTECHNOLOGICAL QUALITY. GMP. TOXICITY. KINETICS. REPRODUCTIVE KINETICS. CARCINOGENCITY.
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4 EWG is further divided into a member of working topic groups for which a RAPPORTEUR.
STEERING COMMITTEE IS ADVISED BY
EXPERT WORKING GROUP ON TECHNICAL ISSUES .
On the basis of “CONCEPT PAPER”
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Individual Harmonisation topics
Safety. Quality Efficacy Multidisciplinary
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Status of ICH GUIDE LINES:
EFFICIENCY TOPICS
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GENERAL CLASS
ICH CODE GUIDE LINE TITLE
ICH STAGE
EXPOSURE E1 The extent of population exposure to assess clinical safety
5
Clinical safety E2E2A
E2B
Def & sds for expedited reporting.Data elements for transmission of adv.drug reactions.
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5
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Study reports
E 3 Clinical study reports str &format
5
Dose response
E4 Dose response & information
5
Clinical trial Designs.
E8E9E10E11
Gen consideratiStatisticalChoice of controlGroups.Clinical trials in children
551
1
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SAFETY TOPICS
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Carcinogenicity
S1S1AS1BS1C
Need for CarcinogenicityTesting for c.gencity.Dose selection.
55
5
Genotoxicity S2S2AS2B
Specific aspect fRegulatory test.std tests.
55
Kinetics S3S3 AS3 B
ToxicokineticsPhar.kinetics.
55
Reproductive toxicity
S5S5 AS5 B
Toxicity to reproductionMale fertility.
5
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QUALITY TOPICS
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Quality topics
Q1Q1AQ1BQ1C
Sta tes’g f new dr’s& prod’s.Photo stability testing.Stability testing of new formulation.
15
5
Analytical Validation.
Q2Q2 A
Def ,technology& methodology
5
Pharmacia's Q4 Pharmacopoeilharmonisation
5
GMP Q7Q7A
GMP for APIS
1
Impurity Q3Q3A
Impurity on new drug sub’ces &dosage for’s
55
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Selection of Topics
Step 1Step 2Step 3Step 4Step 5
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BY
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