3-Methyl-4,5-dihydroisothiazole 1,1-dioxide CAS 881652-46-6

Purity 97%+In StockPharmaceutical Standards
CAS No.881652-46-6
Molecular FormulaC4H7NO2S
Molecular Weight133.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methyl-4,5-dihydroisothiazole 1,1-dioxide CAS 881652-46-6 chemical structure

Description

CATO manufactures 3-Methyl-4,5-dihydroisothiazole 1,1-dioxide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

CATO supplies 3-Methyl-4,5-dihydroisothiazole 1,1-dioxide (CAS 881652-46-6), a certified reference material (molecular formula C4H7NO2S, MW 133.17 g/mol) for analytical method development and quality control.

Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 3-Methyl-4,5-dihydroisothiazole 1,1-dioxide is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 133.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

Physical & Chemical Properties

Molecular FormulaC4H7NO2S
Molecular Weight133.17 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1987
Nitrogen Atoms1
Sulfur Atoms1

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