Felodipine Impurity 33 CAS CATO-C4X-109433

Description

The occurrence of Felodipine Impurity 33 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Felodipine Impurity 33 (CAS CATO-C4X-109433), a pharmacopoeial impurity reference standard (molecular formula C12H10Cl2O3, MW 273.11 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Felodipine Impurity 33 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 273.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

CATO manufactures Felodipine Impurity 33 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com