Sodium Fusidate EP Impurity G CAS 4680-37-9

Description

Compared with other compounds in its class, the molecular weight of 514.69 g/mol gives Sodium Fusidate EP Impurity G distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Sodium Fusidate EP Impurity G (CAS 4680-37-9) is a certified pharmaceutical impurity reference standard with the molecular formula C31H46O6 and a molecular weight of 514.69 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, Sodium Fusidate EP Impurity G is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 514.69 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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