Ritonavir Impurity 44 CAS 652131-62-9

Description

Compared with other compounds in its class, the molecular weight of 119.55 g/mol gives Ritonavir Impurity 44 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Ritonavir Impurity 44 (CAS 652131-62-9), a pharmacopoeial impurity reference standard (molecular formula C4H6ClNO, MW 119.55 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Ritonavir Impurity 44 is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 119.55 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), Ritonavir Impurity 44 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

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