Ethyl 3-chloro-1-methyl-5-sulfamoyl-1H-pyrazole-4-carboxylate CAS 100784-26-7

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.

Ethyl 3-chloro-1-methyl-5-sulfamoyl-1H-pyrazole-4-carboxylate (CAS 100784-26-7) is a high-purity analytical reference standard with the molecular formula C7H10ClN3O4S and a molecular weight of 267.69 g/mol.

Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Ethyl 3-chloro-1-methyl-5-sulfamoyl-1H-pyrazole-4-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 267.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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