Favipiravir Impurity 14 CAS 55557-52-3

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.55557-52-3
Molecular FormulaC5H2ClN3
Molecular Weight139.54 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Favipiravir Impurity 14 CAS 55557-52-3 chemical structure

Description

CATO supplies Favipiravir Impurity 14 (CAS 55557-52-3), a pharmacopoeial impurity reference standard (molecular formula C5H2ClN3, MW 139.54 g/mol) used for the identification and quantification of trace impurities in APIs.

Favipiravir Impurity 14 (C5H2ClN3) contains a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

As a certified reference material (CRM), Favipiravir Impurity 14 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC5H2ClN3
Molecular Weight139.54 g/mol
Purity>95%
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1972
Halogen ContentCl-containing
Nitrogen Atoms3

Related Favipiravir Standards

Recommended Standards

Why CATO?