Levofloxacin Impurity 20 CAS 2206360-62-3

Description

Compared with other compounds in its class, the molecular weight of 279.22 g/mol gives Levofloxacin Impurity 20 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Levofloxacin Impurity 20 (CAS 2206360-62-3), a pharmacopoeial impurity reference standard (molecular formula C13H10FNO5, MW 279.22 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Levofloxacin Impurity 20 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 279.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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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