4-Chloro-2-mercaptophenol CAS 21151-77-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21151-77-9 |
| Molecular Formula | C6H5ClOS |
| Molecular Weight | 160.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4-Chloro-2-mercaptophenol (CAS 21151-77-9) pharmaceutical standards reference standard. Molecular formula: C6H5ClOS. Molecular weight: 160.62 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C6H5ClOS |
| Molecular Weight | 160.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
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- 4-Chloro-6-methylpyrimidine-2(1H)-thione (CAS 1240622-76-7)
- 2-Chloro-3-methylthiopyrazine (CAS 1248090-42-7)
- 2-Chloro-5-cyclopropyl-1,3,4-thiadiazole (CAS 1343234-55-8)
- 5-Chloro-2-methylthiophene-3-carbaldehyde (CAS 1507574-75-5)
- 3-Chloro-5-cyclopropyl-1,2,4-thiadiazole (CAS 1597081-85-0)
- 2-Chloro-1-(thiophen-2-yl)ethan-1-one (CAS 29683-77-0)
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Recommended Standards
- 4-(Chloromethyl)thiophene-2-carbaldehyde (CAS 33148-81-1)
- 5-Chloro-4-methylthiophene-2-carbaldehyde (CAS 65782-04-9)
- 3-Methylthiophene-2-carbonyl chloride (CAS 61341-26-2)
- 88504-24-9 Maleinimidyl-N-(2,5,8,11,14,17,20,23,26,29,32,35-dodecaoxaheptatriacontan-37-yl)propanamide MFCD11041152 (CAS 88504-24-9)
- (2S,4R)-4-((tert-Butoxycarbonyl)amino)-5-(4-hydroxy-3-nitrophenyl)-2-methylpentanoic acid (CAS 2361404-24-0)
- 1-[4-(Dimethylamino)-2-hydroxyphenyl]ethan-1-one (CAS 107070-69-9)
- 2-Bromo-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine (CAS 1361853-84-0)
- (5-Chloro-2-propoxyphenyl)methanamine (CAS 608524-02-3)
- 2,5-Dihexylterephthalonitrile (CAS 117635-25-3)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
Why CATO?
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com