1-Methyl-5-sulfamoyl-1H-pyrazole-4-carboxylic acid CAS 159709-49-6

Description

The occurrence of 1-Methyl-5-sulfamoyl-1H-pyrazole-4-carboxylic acid is closely related to a carbohydrate-derived structure, an amide group, a sulfone group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

1-Methyl-5-sulfamoyl-1H-pyrazole-4-carboxylic acid (CAS 159709-49-6) is a high-purity analytical reference standard with the molecular formula C5H7N3O4S and a molecular weight of 205.19 g/mol.

The molecular framework of 1-Methyl-5-sulfamoyl-1H-pyrazole-4-carboxylic acid (C5H7N3O4S) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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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