4-Vinylbenzenesulfonyl chloride CAS 2633-67-2
| CAS No. | 2633-67-2 |
| Molecular Formula | C8H7ClO2S |
| Molecular Weight | 202.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Vinylbenzenesulfonyl chloride.
4-Vinylbenzenesulfonyl chloride (CAS 2633-67-2) is a high-purity analytical reference standard with the molecular formula C8H7ClO2S and a molecular weight of 202.66 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 4-Vinylbenzenesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 202.66 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Vinylbenzenesulfonyl 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 | C8H7ClO2S |
| Molecular Weight | 202.66 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-methoxyphenoxymethanecarbothioyl chloride (CAS 940-58-9)
- 5-Chloro-2-(methylsulfanyl)benzoic acid (CAS 62176-39-0)
- 3-Chloro-5-(methylthio)benzoic acid (CAS 53985-46-9)
- Azetidin-1-yl(2-chlorothiazol-5-yl)methanone (CAS 919784-27-3)
- 2-Bromo-N-(2-methoxyethyl)-5-nitropyridin-4-amine (CAS 2403766-55-0)
- N-Methoxy-N-methyl-thiazole-2-carboxamide (CAS 885278-18-2)
- 4-Chloro-3-fluoroiodobenzene (CAS 202982-67-0)
- 1,6-Dimethyl-4-(trifluoromethyl)pyridin-2(1H)-one (CAS 343981-56-6)
- 6-Methylpiperidine-2-carboxylic acid hydrochloride (CAS 117928-49-1)
- Phenyl(3-(((3-(trifluoromethyl)benzyl)sulfonyl)methyl)benzofuran-2-yl)methanone (CAS 866017-29-0)
- 2-Phenylthiazol-4-amine (CAS 123970-57-0)
- Bis(4-fluorophenyl) ether (CAS 330-93-8)
- 3-Methyl-4-(4-methylphenyl)-1H-pyrazol-5-amine hydrochloride (CAS 1239160-81-6)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
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