| CAS No. | 2905-23-9 |
| Molecular Formula | C6H10Cl2O2S |
| Molecular Weight | 217.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
| Molecular Formula | C6H10Cl2O2S |
| Molecular Weight | 217.11 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |