5-Chloro-N-(4-(difluoromethoxy)phenyl)-2-(methylthio)pyrimidine-4-carboxamide CAS 879957-97-8

Description

5-Chloro-N-(4-(difluoromethoxy)phenyl)-2-(methylthio)pyrimidine-4-carboxamide (CAS 879957-97-8), molecular formula C13H10ClF2N3O2S and molecular weight 345.75 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C13H10ClF2N3O2S, 5-Chloro-N-(4-(difluoromethoxy)phenyl)-2-(methylthio)pyrimidine-4-carboxamide contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 345.75 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

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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