Cefprozil (Z)-isomer Impurity 48 CAS CATO-C4X-149248

Description

Compared with other compounds in its class, the molecular weight of 389.43 g/mol gives Cefprozil (Z)-isomer Impurity 48 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

As a process- or degradation-related impurity, Cefprozil (Z)-isomer Impurity 48 (CAS CATO-C4X-149248, C18H19N3O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Cefprozil (Z)-isomer Impurity 48 (C18H19N3O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

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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