Methyl 3-oxo-2,3-dihydrobenzo[d]isothiazole-6-carboxylate 1,1-dioxide CAS 63633-85-2

Description

Compared with other compounds in its class, the molecular weight of 241.22 g/mol gives Methyl 3-oxo-2,3-dihydrobenzo[d]isothiazole-6-carboxylate 1,1-dioxide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Methyl 3-oxo-2,3-dihydrobenzo[d]isothiazole-6-carboxylate 1,1-dioxide (CAS 63633-85-2), a certified reference material (molecular formula C9H7NO5S, MW 241.22 g/mol) for analytical method development and quality control.

Structurally, Methyl 3-oxo-2,3-dihydrobenzo[d]isothiazole-6-carboxylate 1,1-dioxide (C9H7NO5S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 241.22 g/mol, it falls into the medium-molecular-weight range. 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).

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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com