N-((2-Chlorophenyl)sulfonyl)-5-methylisoxazole-3-carboxamide CAS 139443-20-2

Description

Compared with other compounds in its class, the molecular weight of 300.72 g/mol gives N-((2-Chlorophenyl)sulfonyl)-5-methylisoxazole-3-carboxamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

N-((2-Chlorophenyl)sulfonyl)-5-methylisoxazole-3-carboxamide (CAS 139443-20-2), molecular formula C11H9ClN2O4S and molecular weight 300.72 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, N-((2-Chlorophenyl)sulfonyl)-5-methylisoxazole-3-carboxamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 300.72 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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