Flucloxacillin impurity 6 CAS CATO-C4X-16476

Description

Compared with other compounds in its class, the molecular weight of 485.91 g/mol gives Flucloxacillin impurity 6 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Flucloxacillin impurity 6 (CAS CATO-C4X-16476), a pharmacopoeial impurity reference standard (molecular formula C20H21ClFN3O6S, MW 485.91 g/mol) used for the identification and quantification of trace impurities in APIs.

Flucloxacillin impurity 6 (C20H21ClFN3O6S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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