Upadacitinib Impurity 221 CAS CATO-C4X-2405221

Description

The occurrence of Upadacitinib Impurity 221 is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Upadacitinib Impurity 221 (CAS CATO-C4X-2405221), a pharmacopoeial impurity reference standard (molecular formula C28H22N6O4S2, MW 570.64 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C28H22N6O4S2, Upadacitinib Impurity 221 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 570.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 Upadacitinib Impurity 221 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?

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