5-(1H-pyrazol-3-yl)furan-2-sulfonyl chloride CAS 1350521-74-2

Description

The molecular framework of 5-(1H-pyrazol-3-yl)furan-2-sulfonyl chloride (C7H5ClN2O3S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

CATO supplies 5-(1H-pyrazol-3-yl)furan-2-sulfonyl chloride (CAS 1350521-74-2), a certified reference material (molecular formula C7H5ClN2O3S, MW 232.64 g/mol) for analytical method development and quality control.

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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