637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 CAS 637-89-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 637-89-8 |
| Molecular Formula | C6H12OS |
| Molecular Weight | 132.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 (CAS 637-89-8) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C6H12OS. Molecular weight: 132.22 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C6H12OS |
| Molecular Weight | 132.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Hydroquinone Standards
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- Hydroquinone bis(2-hydroxyethyl) ether (CAS 104-38-1)
- Hydroquinone Impurity 8 (CAS CATO-C4X-25988)
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Recommended Standards
- 55764-23-3 WCT2259X5L 2,5-Dimethyl-3-furanthiol 2,5-Dimethylfuran-3-thiol 3-Furanthiol, 2,5-dimethyl- 2,5-Dimethyl-3-furylmercaptan 2,5-Dimethyl-3-mercaptofuran EINECS 259-800-5 FEMA No. 3451 3-Mercapto-2,5-dimethylfuran UNII-WCT2259X5L (CAS 55764-23-3)
- 999-90-6 S-Tert-butyl thioacetate S-tert-butyl ethanethioate (CAS 999-90-6)
- 463-11-6 1-Fluorooctane Octane, 1-fluoro- 4-01-00-00418 (Beilstein Handbook Reference) BRN 1697462 EINECS 207-333-2 NSC 62037 Octyl fluoride n-Octyl fluoride 1-Octyl fluoride (CAS 463-11-6)
- tert-Butyl N-allyl-N-(tert-butoxycarbonyl)glycinate (CAS 1360436-08-3)
- 1,2-Dimethoxy-6,7,8,9-tetrahydro-5H-benzo[7]annulen-5-one (CAS 54130-94-8)
- Ethyl 1-(5-fluoropyridin-2-yl)piperidine-4-carboxylate (CAS 1310820-59-7)
- 4-(bromomethyl)-2-chloroquinoline (CAS 137354-54-2)
- N-Ethyl-4-hexylaniline (CAS 1422573-77-0)
- 2-Chloro-N-(furan-2-ylmethyl)-3-nitro-4-phenoxybenzenesulfonamide (CAS 88344-97-2)
- Insulin Degludec Impurity 20 (CAS CATO-C4X-215720)
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