4-PYRIDINETHIOL
4-Mercaptopyridine
CAS: 4556-23-4
Molecular Formula: C5H5NS
4-PYRIDINETHIOL - Names and Identifiers
| Name | 4-Mercaptopyridine |
| Synonyms | NOLA-009 4-Pyridinethiol 4-PYRIDINETHIOL Pyridine-4-thiol Mercaptopyridine 4-Mercaptopyridine 4-MERCAPTOPYRIDINE pyridine-4-thiolate 4-PYRIDYL MERCAPTAN 4-sulfhydrylpyridine pyridine-4(1H)-thione Pyridine-4-thiol, 4-Mercaptopyridine, 4-Sulphanylpyridine |
| CAS | 4556-23-4 |
| EINECS | 224-926-1 |
| InChI | InChI=1/C5H5NS/c7-5-1-3-6-4-2-5/h1-4H,(H,6,7)/p-1 |
| InChIKey | FHTDDANQIMVWKZ-UHFFFAOYSA-N |
4-PYRIDINETHIOL - Physico-chemical Properties
| Molecular Formula | C5H5NS |
| Molar Mass | 111.16 |
| Density | 1.161 (estimate) |
| Melting Point | 182-189 °C |
| Boling Point | 194.0±13.0 °C(Predicted) |
| Flash Point | 71.1°C |
| Solubility | DMSO, Methanol |
| Vapor Presure | 0.631mmHg at 25°C |
| Appearance | Transparent liquid |
| Color | Yellow to yellow-green or brown |
| pKa | pK1:1.43(＋1);pK2:8.86(0) (20°C) |
| Storage Condition | 2-8°C |
| Sensitive | Sensitive to heat and air |
| Refractive Index | 1.5605 (estimate) |
| MDL | MFCD00006422 |
| Physical and Chemical Properties | Appearance of light yellow crystals |
| Use | Pharmaceutical Intermediates |
4-PYRIDINETHIOL - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | UT8578000 |
| HS Code | 29333990 |
4-PYRIDINETHIOL - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| use | 4-mercaptopyridine can be used as an intermediate in pharmaceutical synthesis and chemical materials. |
| application | can prepare benzyl cephalosporin. The method uses bromoacetyl 7-ACA as a raw material, including: in a solvent, in the presence of an organic base, bromoacetyl 7-ACA reacts with 4-mercaptopyridine to obtain solid cefalicylic acid; then, to the reaction solution, Add inorganic base to dissolve cefalicylic acid into salt, and at the same time add a reducing agent, the reducing agent is sodium thiosulfate, sodium bisulfite or vitamin C; then to the reaction solution, add A reagent, cefalicylate reacted with reagent A at 0~50 ℃ for 0.1~20 hours to obtain benzin cephalosporin, where reagent A was dibenzyl ethylenediamine acetate or dibenzyl ethylenediamine. |
Last Update：2024-04-30 12:46:26
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