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Antibody drug with four drug compounds linked to IgG immunoglobulin

ICH Q6B Test Procedures And Acceptance Criteria For Biophysical Characterization

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ICH Q6B is a guideline developed by the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH). It focuses on the specification of test procedures and acceptance criteria for biotechnological/biological products. Accepted by FDA, EMeA, and Japanese regulatory agencies, this guideline details standards for biotechnological/biological products, including composition determination, physical properties, and structure of the therapeutic protein.

 

ICH Q6B Compliance Criteria
Structural Characterization and Confirmation:
  • Complete Amino Acid Sequencing
  • Amino Acid Composition
  • Peptide Map
  • Sulfhydryl Group(s) and Disulfide Bridges
  • Carbohydrate Structure
  • Monosaccharide Composition (Neutral and Amino Monosaccharides, Sialic Acid)
  • Oligosaccharide Linkage Patterns (Antennary Profile)
  • Glycosylation Sites of Polypeptide Chain
Physicochemical Properties:
  • Molecular Weight or Size
  • Isoform and Electrophoretic Pattern
  • Extinction Coefficient (or Molar Absorptivity)
  • Liquid Chromatographic Patterns
  • Spectroscopic Profiles
Impurities:
  • Truncated Forms
  • Other Modified Forms (Deamidated, Disulfide Scrambling, Oxidization, Glycosylation)
  • Aggregates (Thermal Stability)

Testing Procedures

CovalX provides comprehensive solutions for characterizing products in alignment with the ICH Q6B quality guidelines required for IND submission. Explore our offerings:

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