4,4'-Thiobis(benzene-1-sulfonyl chloride) CAS 3119-65-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 3119-65-1 |
| Molecular Formula | C12H8Cl2O4S3 |
| Molecular Weight | 383.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4'-Thiobis(benzene-1-sulfonyl chloride) (CAS 3119-65-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H8Cl2O4S3. Molecular weight: 383.29 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H8Cl2O4S3 |
| Molecular Weight | 383.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 3 |
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Recommended Standards
- 2,3-dichloro-N-(6-methoxy-3-pyridinyl)-3-[(4-methylbenzyl)sulfanyl]acrylamide (CAS 337922-08-4)
- Methyl 3-cyclohexyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole-6-carboxylate (CAS 863579-14-0)
- 2-(N-(2,4-dichloro-5-methoxyphenyl)methylsulfonamido)-N,N-diethylacetamide (CAS 672951-76-7)
- 4-Cyclopropyloxybenzoic Acid Ethyl Ester (CAS 62577-91-7)
- 2-(Piperidin-1-yl)-N-(5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)acetamide (CAS 221647-49-0)
- (2-fluoro-4-phenoxyphenyl)boronic acid (CAS 1414356-30-1)
- 1-(2,4-Dihydroxyphenyl)-2-(3,4-dimethoxyphenyl)-ethanone (CAS 24126-98-5)
- 1-(bromomethyl)-4-(methylsulfonyl)benzene (CAS 53606-06-7)
- (2E)-N-(3-Chloro-4-fluorophenyl)-3-(2,3,4-trimethoxyphenyl)prop-2-enamide (CAS 329778-84-9)
- Semaglutide impurity 75 (CAS CATO-C4X-222675)
Why CATO?
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