Isothiazol-3(2H)-one CAS 1003-07-2

Purity >95%In StockPharmaceutical Standards
CAS No.1003-07-2
Molecular FormulaC3H3NOS
Molecular Weight101.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Isothiazol-3(2H)-one CAS 1003-07-2 chemical structure

Description

CATO manufactures Isothiazol-3(2H)-one 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.

Isothiazol-3(2H)-one (CAS 1003-07-2), molecular formula C3H3NOS and molecular weight 101.13 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, Isothiazol-3(2H)-one is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 101.13 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.

Physical & Chemical Properties

Molecular FormulaC3H3NOS
Molecular Weight101.13 g/mol
Purity>95%
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)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Nitrogen Atoms1
Sulfur Atoms1

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