3-Mercaptothiophene-2-carboxylic acid CAS 90033-62-8

Purity 97%+In StockPharmaceutical Standards
CAS No.90033-62-8
Molecular FormulaC5H4O2S2
Molecular Weight160.21 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Mercaptothiophene-2-carboxylic acid CAS 90033-62-8 chemical structure

Description

Structurally, 3-Mercaptothiophene-2-carboxylic acid (C5H4O2S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 160.21 g/mol, it falls into the medium-molecular-weight range. 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).

3-Mercaptothiophene-2-carboxylic acid (CAS 90033-62-8) is a high-purity analytical reference standard with the molecular formula C5H4O2S2 and a molecular weight of 160.21 g/mol.

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 3-Mercaptothiophene-2-carboxylic acid 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 FormulaC5H4O2S2
Molecular Weight160.21 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1982
Sulfur Atoms2

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