| CAS No. | 84501-81-5 |
| Molecular Formula | C2H3Cl3O2S |
| Molecular Weight | 197.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
1,2-Dichloroethane-1-sulfonyl chloride (CAS 84501-81-5), molecular formula C2H3Cl3O2S and molecular weight 197.47 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1,2-Dichloroethane-1-sulfonyl chloride (C2H3Cl3O2S) 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.
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.
As a certified reference material (CRM), 1,2-Dichloroethane-1-sulfonyl chloride 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.
| Molecular Formula | C2H3Cl3O2S |
| Molecular Weight | 197.47 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1981 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |