2-((2-Nitrophenyl)thio)benzo[d]isothiazol-3(2h)-one 1,1-dioxide CAS 16239-03-5

Purity 97%+In StockPharmaceutical Standards
CAS No.16239-03-5
Molecular FormulaC13H8N2O5S2
Molecular Weight336.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-((2-Nitrophenyl)thio)benzo[d]isothiazol-3(2h)-one 1,1-dioxide CAS 16239-03-5 chemical structure

Description

CATO manufactures 2-((2-Nitrophenyl)thio)benzo[d]isothiazol-3(2h)-one 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.

2-((2-Nitrophenyl)thio)benzo[d]isothiazol-3(2h)-one 1,1-dioxide (CAS 16239-03-5) is a high-purity analytical reference standard with the molecular formula C13H8N2O5S2 and a molecular weight of 336.34 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 2-((2-Nitrophenyl)thio)benzo[d]isothiazol-3(2h)-one 1,1-dioxide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 336.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC13H8N2O5S2
Molecular Weight336.34 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1961
Nitrogen Atoms2
Sulfur Atoms2

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