2905-23-9 2-Chlorobenzenesulfonyl chloride Benzenesulfonyl chloride, o-chloro- (6CI,7CI,8CI) Benzenesulfonyl chloride, 2-chloro- 2-Chlorobenzenesulphonyl chloride 4-11-00-00106 (Beilstein Handbook Reference) BRN 0974321 o-Chlorobenzenesulfochloride o-Chlorobenzenesulfonyl chloride EINECS 220-807-3 CAS 2905-23-9

Purity 97%+In StockPharmaceutical Standards
CAS No.2905-23-9
Molecular FormulaC6H10Cl2O2S
Molecular Weight217.11 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2905-23-9
2-Chlorobenzenesulfonyl chloride
Benzenesulfonyl chloride, o-chloro- (6CI,7CI,8CI)
Benzenesulfonyl chloride, 2-chloro-
2-Chlorobenzenesulphonyl chloride
4-11-00-00106 (Beilstein Handbook Reference)
BRN 0974321
o-Chlorobenzenesulfochloride
o-Chlorobenzenesulfonyl chloride
EINECS 220-807-3 CAS 2905-23-9 chemical structure

Description

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.

CATO supplies 2905-23-9 2-Chlorobenzenesulfonyl chloride Benzenesulfonyl chloride, o-chloro- (6CI,7CI,8CI) Benzenesulfonyl chloride, 2-chloro- 2-Chlorobenzenesulphonyl chloride 4-11-00-00106 (Beilstein Handbook Reference) BRN 0974321 o-Chlorobenzenesulfochloride o-Chlorobenzenesulfonyl chloride EINECS 220-807-3 (CAS 2905-23-9), a certified reference material (molecular formula C6H10Cl2O2S, MW 217.11 g/mol) for analytical method development and quality control.

Based on its molecular formula C6H10Cl2O2S, 2905-23-9 2-Chlorobenzenesulfonyl chloride Benzenesulfonyl chloride, o-chloro- (6CI,7CI,8CI) Benzenesulfonyl chloride, 2-chloro- 2-Chlorobenzenesulphonyl chloride 4-11-00-00106 (Beilstein Handbook Reference) BRN 0974321 o-Chlorobenzenesulfochloride o-Chlorobenzenesulfonyl chloride EINECS 220-807-3 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 217.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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 FormulaC6H10Cl2O2S
Molecular Weight217.11 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 Atoms1

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