Cefotaxime Impurity 40 CAS CATO-C4X-120140

Description

Compared with other compounds in its class, the molecular weight of 882.92 g/mol gives Cefotaxime Impurity 40 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Cefotaxime Impurity 40 (CAS CATO-C4X-120140), a pharmacopoeial impurity reference standard (molecular formula C31H34N10O13S4, MW 882.92 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefotaxime Impurity 40 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 882.92 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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