1,2-Benzisothiazol-3(2H)-One CAS 2634-33-5

Purity >95%In StockPharmaceutical Standards
CAS No.2634-33-5
Molecular FormulaC7H5NOS
Molecular Weight151.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,2-Benzisothiazol-3(2H)-One CAS 2634-33-5 chemical structure

Description

1,2-Benzisothiazol-3(2H)-One (CAS 2634-33-5) is a high-purity analytical reference standard with the molecular formula C7H5NOS and a molecular weight of 151.19 g/mol.

1,2-Benzisothiazol-3(2H)-One (C7H5NOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

CATO manufactures 1,2-Benzisothiazol-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.

Physical & Chemical Properties

Molecular FormulaC7H5NOS
Molecular Weight151.19 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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms1
Sulfur Atoms1

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