59337-94-9 8U1Y9OZ97D 2,3-Dihydro-3-oxothieno(2,3-d)isothiazole 1,1-dioxide UNII-8U1Y9OZ97D Thieno(2,3-d)isothiazol-3(2H)-one, 1,1-dioxide CAS 59337-94-9

Purity 97%+In StockPharmaceutical Standards
CAS No.59337-94-9
Molecular FormulaC5H3NO3S2
Molecular Weight189.21 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

59337-94-9 8U1Y9OZ97D 2,3-Dihydro-3-oxothieno(2,3-d)isothiazole 1,1-dioxide UNII-8U1Y9OZ97D Thieno(2,3-d)isothiazol-3(2H)-one, 1,1-dioxide CAS 59337-94-9 chemical structure

Description

59337-94-9 8U1Y9OZ97D 2,3-Dihydro-3-oxothieno(2,3-d)isothiazole 1,1-dioxide UNII-8U1Y9OZ97D Thieno(2,3-d)isothiazol-3(2H)-one, 1,1-dioxide (CAS 59337-94-9) is a high-purity analytical reference standard with the molecular formula C5H3NO3S2 and a molecular weight of 189.21 g/mol.

Based on its molecular formula C5H3NO3S2, 59337-94-9 8U1Y9OZ97D 2,3-Dihydro-3-oxothieno(2,3-d)isothiazole 1,1-dioxide UNII-8U1Y9OZ97D Thieno(2,3-d)isothiazol-3(2H)-one, 1,1-dioxide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 189.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

As a certified reference material (CRM), 59337-94-9 8U1Y9OZ97D 2,3-Dihydro-3-oxothieno(2,3-d)isothiazole 1,1-dioxide UNII-8U1Y9OZ97D Thieno(2,3-d)isothiazol-3(2H)-one, 1,1-dioxide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC5H3NO3S2
Molecular Weight189.21 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
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
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1973
Nitrogen Atoms1
Sulfur Atoms2

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