Formoterol Impurity 24 CAS 49861-92-9

Description

Compared with other compounds in its class, the molecular weight of 330.38 g/mol gives Formoterol Impurity 24 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Formoterol Impurity 24 (CAS 49861-92-9), a pharmacopoeial impurity reference standard (molecular formula C18H22N2O4, MW 330.38 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Formoterol Impurity 24 (C18H22N2O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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