Parecoxib Impurity 30 CAS 1373038-57-3

Description

Compared with other compounds in its class, the molecular weight of 333.79 g/mol gives Parecoxib Impurity 30 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Parecoxib Impurity 30 (CAS 1373038-57-3) is a certified pharmaceutical impurity reference standard with the molecular formula C16H12ClNO3S and a molecular weight of 333.79 g/mol.

Based on its molecular formula C16H12ClNO3S, Parecoxib Impurity 30 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 333.79 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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