5-Chlorothiophene-2-sulfonyl chloride 5-chlorothiophenesulfonyl chloride 5-chloro-2-thiophenesulfonyl chloride 5-chlorothiophene-2-sulphonyl chloride 5-chlorothiophene-2-sulphonylchloride 5-chlorothiophenesulphonyl chloride 5-chlorothiophen-2-sulfonyl chloride 5-chloro-2-thienylsulfonyl chloride 5-chloro-thiophene-2-sulfonyl chloride 5-chlorothiophene-2-sulfonylchloride 2766-74-7 CAS 2766-74-7

Purity 97%+In StockPharmaceutical Standards
CAS No.2766-74-7
Molecular FormulaC4H6Cl2O2S2
Molecular Weight221.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chlorothiophene-2-sulfonyl chloride 5-chlorothiophenesulfonyl chloride 5-chloro-2-thiophenesulfonyl chloride 5-chlorothiophene-2-sulphonyl chloride 5-chlorothiophene-2-sulphonylchloride 5-chlorothiophenesulphonyl chloride 5-chlorothiophen-2-sulfonyl chloride 5-chloro-2-thienylsulfonyl chloride 5-chloro-thiophene-2-sulfonyl chloride 5-chlorothiophene-2-sulfonylchloride 2766-74-7 CAS 2766-74-7 chemical structure

Description

5-Chlorothiophene-2-sulfonyl chloride 5-chlorothiophenesulfonyl chloride 5-chloro-2-thiophenesulfonyl chloride 5-chlorothiophene-2-sulphonyl chloride 5-chlorothiophene-2-sulphonylchloride 5-chlorothiophenesulphonyl chloride 5-chlorothiophen-2-sulfonyl chloride 5-chloro-2-thienylsulfonyl chloride 5-chloro-thiophene-2-sulfonyl chloride 5-chlorothiophene-2-sulfonylchloride 2766-74-7 (CAS 2766-74-7) is a high-purity analytical reference standard with the molecular formula C4H6Cl2O2S2 and a molecular weight of 221.13 g/mol.

The molecular framework of 5-Chlorothiophene-2-sulfonyl chloride 5-chlorothiophenesulfonyl chloride 5-chloro-2-thiophenesulfonyl chloride 5-chlorothiophene-2-sulphonyl chloride 5-chlorothiophene-2-sulphonylchloride 5-chlorothiophenesulphonyl chloride 5-chlorothiophen-2-sulfonyl chloride 5-chloro-2-thienylsulfonyl chloride 5-chloro-thiophene-2-sulfonyl chloride 5-chlorothiophene-2-sulfonylchloride 2766-74-7 (C4H6Cl2O2S2) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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

As a certified reference material (CRM), 5-Chlorothiophene-2-sulfonyl chloride 5-chlorothiophenesulfonyl chloride 5-chloro-2-thiophenesulfonyl chloride 5-chlorothiophene-2-sulphonyl chloride 5-chlorothiophene-2-sulphonylchloride 5-chlorothiophenesulphonyl chloride 5-chlorothiophen-2-sulfonyl chloride 5-chloro-2-thienylsulfonyl chloride 5-chloro-thiophene-2-sulfonyl chloride 5-chlorothiophene-2-sulfonylchloride 2766-74-7 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 FormulaC4H6Cl2O2S2
Molecular Weight221.13 g/mol
Purity97%+
StorageStore at room temperature, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityContains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1957
Halogen ContentCl-containing
Sulfur Atoms2

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