5-Chloro-2-methyl-3(2H)-isothiazolone 1,1-Dioxide CAS 1082042-00-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1082042-00-9
Molecular FormulaC4H4ClNO3S
Molecular Weight181.60 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chloro-2-methyl-3(2H)-isothiazolone 1,1-Dioxide CAS 1082042-00-9 chemical structure

Description

The occurrence of 5-Chloro-2-methyl-3(2H)-isothiazolone 1,1-Dioxide is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5-Chloro-2-methyl-3(2H)-isothiazolone 1,1-Dioxide (CAS 1082042-00-9), molecular formula C4H4ClNO3S and molecular weight 181.60 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C4H4ClNO3S, 5-Chloro-2-methyl-3(2H)-isothiazolone 1,1-Dioxide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 181.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

CATO manufactures 5-Chloro-2-methyl-3(2H)-isothiazolone 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.

Physical & Chemical Properties

Molecular FormulaC4H4ClNO3S
Molecular Weight181.60 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1989
Halogen ContentCl-containing
Nitrogen Atoms1
Sulfur Atoms1

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