Ethosuximide impurity 16 CAS 2024884-97-5

Description

Compared with other compounds in its class, the molecular weight of 141.17 g/mol gives Ethosuximide impurity 16 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Ethosuximide impurity 16 (CAS 2024884-97-5) is a certified pharmaceutical impurity reference standard with the molecular formula C7H11NO2 and a molecular weight of 141.17 g/mol.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Ethosuximide impurity 16 is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 141.17 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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