4-(chlorosulfonyl)benzoyl chloride CAS 7516-60-1
| CAS No. | 7516-60-1 |
| Molecular Formula | C7H4Cl2O3S |
| Molecular Weight | 239.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(chlorosulfonyl)benzoyl chloride (CAS 7516-60-1) is a high-purity analytical reference standard with the molecular formula C7H4Cl2O3S and a molecular weight of 239.08 g/mol.
The molecular framework of 4-(chlorosulfonyl)benzoyl chloride (C7H4Cl2O3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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.
As a certified reference material (CRM), 4-(chlorosulfonyl)benzoyl 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.
Physical & Chemical Properties
| Molecular Formula | C7H4Cl2O3S |
| Molecular Weight | 239.08 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.) | 1959 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related chlorosulfonyl Standards
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- 4-(chlorosulfonyl)butane-1-sulfonyl fluoride (CAS 1820613-32-8)
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- Ethyl 2-(chlorosulfonyl)-1H-imidazole-5-carboxylate (CAS 1073187-02-6)
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