5-(1,3-Dimethyl-1h-pyrazol-4-yl)isoxazole-4-sulfonyl chloride CAS 1005632-94-9

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 5-(1,3-Dimethyl-1h-pyrazol-4-yl)isoxazole-4-sulfonyl chloride (CAS 1005632-94-9), a certified reference material (molecular formula C8H8ClN3O3S, MW 261.69 g/mol) for analytical method development and quality control.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 5-(1,3-Dimethyl-1h-pyrazol-4-yl)isoxazole-4-sulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 261.69 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).

As a certified reference material (CRM), 5-(1,3-Dimethyl-1h-pyrazol-4-yl)isoxazole-4-sulfonyl chloride meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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