4-(Methylthio)benzenesulfonic acid CAS 70140-60-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 70140-60-2 |
| Molecular Formula | C7H8O3S2 |
| Molecular Weight | 204.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Methylthio)benzenesulfonic acid (CAS 70140-60-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H8O3S2. Molecular weight: 204.27 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C7H8O3S2 |
| Molecular Weight | 204.27 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Sulfur Atoms | 2 |
Related Methylthio Standards
- 1-Methyl-3-(5-(methylthio)-1,2,4-thiadiazol-3-yl)urea (CAS 78430-01-0)
- Ethyl 5-(methylthio)-1,3,4-thiadiazole-2-carboxylate (CAS 75573-82-9)
- 2-(Methylthio)-5,6,7,8-tetrahydroquinoline-3-carbonitrile (CAS 154384-04-0)
- 5-Methyl-3-(methylthio)-1-phenyl-1H-pyrazole (CAS 18714-79-9)
- 1-Methyl-2-(methylthio)-5-phenyl-1H-imidazole (CAS 25433-15-2)
- 2-Ethyl-3-(methylthio)quinoxaline (CAS 658686-48-7)
- 2-Methyl-3-(methylthio)-5-phenylfuran (CAS 54930-80-2)
- 3-(Methylthio)-5,6,7,8-tetrahydroisoquinoline-4-carbonitrile (CAS 839680-24-9)
Recommended Standards
- 4-(Indolin-5-yl)morpholine (CAS 959238-58-5)
- 4,4-Dimethyl-1-(m-tolyl)pyrazolidin-3-one (CAS 66084-81-9)
- 4-(Dimethylamino)-1-phenylpyrrolidin-2-one (CAS 716-38-1)
- 1-(Butylcarbamoyl)piperidine-4-carboxylic acid (CAS 874455-64-8)
- 5-Isopropyl-2,3-dimethylpyrazine (CAS 40790-21-4)
- 1-(2-Hydroxy-5-(2-methoxyethyl)phenyl)-2,2-dimethylpropan-1-one (CAS 1455374-27-2)
- Ethyl 3-(1-phenylethyl)-1H-1,2,4-triazole-5-carboxylate (CAS 1622854-81-2)
- Ascorbic Acid EP Impurity H (CAS 122046-79-1)
- (1R,4r)-4-(fluoromethyl)cyclohexan-1-amine (CAS 1621677-57-3)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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