4-(3-(2-(Methylsulfonamido)phenyl)-5-(o-tolyl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid CAS 923227-45-6

Description

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.

CATO supplies 4-(3-(2-(Methylsulfonamido)phenyl)-5-(o-tolyl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (CAS 923227-45-6), a certified reference material (molecular formula C21H23N3O5S, MW 429.49 g/mol) for analytical method development and quality control.

4-(3-(2-(Methylsulfonamido)phenyl)-5-(o-tolyl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (C21H23N3O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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