5-Chloro-2,4-difluorobenzenesulfonyl Chloride CAS 13656-57-0
Purity 97%+In StockPharmaceutical Standards
| 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 supplies 5-Chloro-2,4-difluorobenzenesulfonyl Chloride (CAS 13656-57-0), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C6H2Cl2F2O2S. Molecular weight: 247.05 g/mol. Batch-specific COA and technical support are available on request.
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)
Recommended Standards
- 3-Bromo-2-methoxy-6-methyl-5-nitropyridine (CAS 1351813-58-5)
- Methyl 5-bromo-2-methoxypyrimidine-4-carboxylate (CAS 1398504-36-3)
- 6-Methyl-2-(p-tolyl)-1,3,6,2-dioxazaborocane-4,8-dione (CAS 1313758-93-8)
- 1-((2-Fluorobenzyl)amino)-2-methylpropan-2-ol (CAS 1184377-47-6)
- 4-Amino-2-fluoro-3-methoxybenzoic acid (CAS 194804-86-9)
- Tofacitinib Impurity 73 (CAS CATO-C4X-107973)
- 3-Chloro-2-(1-ethoxyethoxy)propyl acetate (CAS 85328-35-4)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (2-(ethyl(methyl)amino)pyridin-4-yl)boronate (CAS 1421325-47-4)
- (E)-3-(2-methyl-5-(trifluoromethoxy)phenyl)acrylic acid (CAS 1262019-25-9)
- Semaglutide impurity 289 (CAS CATO-C4X-2226289)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com