4-Chloro-3-[methyl(phenyl)sulfamoyl]benzoic acid CAS 329906-75-4

Description

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.

CATO supplies 4-Chloro-3-[methyl(phenyl)sulfamoyl]benzoic acid (CAS 329906-75-4), a certified reference material (molecular formula C14H12ClNO4S, MW 325.77 g/mol) for analytical method development and quality control.

Based on its molecular formula C14H12ClNO4S, 4-Chloro-3-[methyl(phenyl)sulfamoyl]benzoic acid 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 325.77 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.

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.

Physical & Chemical Properties

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