5-Chlorothiophene-2-sulfonamide CAS 53595-66-7

Purity 97%+In StockPharmaceutical Standards
CAS No.53595-66-7
Molecular FormulaC4H4ClNO2S2
Molecular Weight197.66 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chlorothiophene-2-sulfonamide CAS 53595-66-7 chemical structure

Description

The occurrence of 5-Chlorothiophene-2-sulfonamide is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5-Chlorothiophene-2-sulfonamide (CAS 53595-66-7) is a high-purity analytical reference standard with the molecular formula C4H4ClNO2S2 and a molecular weight of 197.66 g/mol.

Structurally, 5-Chlorothiophene-2-sulfonamide (C4H4ClNO2S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 197.66 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC4H4ClNO2S2
Molecular Weight197.66 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1972
Halogen ContentCl-containing
Nitrogen Atoms1
Sulfur Atoms2

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