Imrecoxib Impurity 42 CAS CATO-C4X-237942

Description

The occurrence of Imrecoxib Impurity 42 is closely related to a flavonoid 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 Imrecoxib Impurity 42 (CAS CATO-C4X-237942), a pharmacopoeial impurity reference standard (molecular formula C21H21NO4S, MW 383.46 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C21H21NO4S, Imrecoxib Impurity 42 contains a flavonoid 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 383.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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), Imrecoxib Impurity 42 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

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