5-Chloro-2,4-difluorobenzenesulfonyl Chloride CAS 13656-57-0
| CAS No. | 13656-57-0 |
| Molecular Formula | C6H2Cl2F2O2S |
| Molecular Weight | 247.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-Chloro-2,4-difluorobenzenesulfonyl Chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
5-Chloro-2,4-difluorobenzenesulfonyl Chloride (CAS 13656-57-0), molecular formula C6H2Cl2F2O2S and molecular weight 247.05 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H2Cl2F2O2S, 5-Chloro-2,4-difluorobenzenesulfonyl Chloride contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 247.05 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 Formula | C6H2Cl2F2O2S |
| Molecular Weight | 247.05 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 | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 5-(4-chloro-2-fluorophenyl)-3-(chloromethyl)-1,2,4-oxadiazole (CAS 1152498-93-5)
- 2-Chloro-3,6-difluorobenzenesulfonyl chloride (CAS 1208074-71-8)
- 3-Chloro-2,6-difluorobenzenesulfonyl chloride (CAS 1208077-31-9)
- 3-Chloro-2,4-difluorobenzene-1-sulfonyl chloride (CAS 1208077-72-8)
- 4-Chloro-2,6-difluorobenzenesulfonyl chloride (CAS 1208077-94-4)
- 6-Chloro-2,3-difluorobenzenesulfonyl chloride (CAS 1208078-24-3)
- 4-Chloro-3,5-difluorobenzenesulfonyl chloride (CAS 1706435-19-9)
- 3-(2-Chloro-5-fluorophenyl)-5-(chloromethyl)-1,2,4-oxadiazole (CAS 1956364-52-5)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com