Indometacin EP Impurity B CAS 2882-15-7

Description

Compared with other compounds in its class, the molecular weight of 219.24 g/mol gives Indometacin EP Impurity B distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Indometacin EP Impurity B (CAS 2882-15-7), a pharmacopoeial impurity reference standard (molecular formula C12H13NO3, MW 219.24 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Indometacin EP Impurity B (C12H13NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 219.24 g/mol, it falls into the medium-molecular-weight range. 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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