Clobetasol Propionate Impurity 21 CAS CATO-C4X-159221

Description

Compared with other compounds in its class, the molecular weight of 602.71 g/mol gives Clobetasol Propionate Impurity 21 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Clobetasol Propionate Impurity 21 (CAS CATO-C4X-159221) is a certified pharmaceutical impurity reference standard with the molecular formula C32H39FO8S and a molecular weight of 602.71 g/mol.

Based on its molecular formula C32H39FO8S, Clobetasol Propionate Impurity 21 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 602.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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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