3-chloro-4-(fluorosulfonyl)benzoic acid CAS 33866-05-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 33866-05-6 |
| Molecular Formula | C7H4ClFO4S |
| Molecular Weight | 238.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-chloro-4-(fluorosulfonyl)benzoic acid (CAS 33866-05-6) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C7H4ClFO4S. Molecular weight: 238.62 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C7H4ClFO4S |
| Molecular Weight | 238.62 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-(Chlorosulfonyl)-5-fluorobenzoic acid (CAS 912577-43-6)
- 4-(Chlorosulfonyl)-3-fluorobenzoic acid (CAS 244606-33-5)
- 3-(Chlorosulfonyl)-4-fluorobenzoic Acid (CAS 2267-40-5)
- 2-(1-Methyl-1h-imidazol-5-yl)-2-(pyrrolidin-1-yl)ethan-1-amine (CAS 1491673-90-5)
- Eltrombopag Impurity 41 (CAS 303730-26-9)
- Zinc cyanide-<SUP>13</SUP>C<SUB>2</SUB> (CAS 1481693-23-5)
- 3-Isopropyl-5-methylpyrazin-2-ol (CAS 820250-48-4)
- 2-Morpholino-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one (CAS 1171618-88-4)
- 4-(Benzenesulfonyl)-3-{4-[(4-chlorophenyl)methoxy]-3-methoxyphenyl}-2-methyl-1,2-oxazolidine (CAS 339110-42-8)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
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 13829788188 / jacky.chen@cato-chem.com