3-Bromo-4-hydroxy-5-nitropyridine
3-Bromo-5-nitropyridin-4(1H)-one
CAS: 31872-65-8
Molecular Formula: C5H3BrN2O3
3-Bromo-4-hydroxy-5-nitropyridine - Names and Identifiers
3-Bromo-4-hydroxy-5-nitropyridine - Physico-chemical Properties
| Molecular Formula | C5H3BrN2O3 |
| Molar Mass | 218.99 |
| Density | 2.006±0.06 g/cm3(Predicted) |
| Boling Point | 341.8±37.0 °C(Predicted) |
| Flash Point | 130.2°C |
| Vapor Presure | 0.00192mmHg at 25°C |
| pKa | -1.63±0.38(Predicted) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Refractive Index | 1.647 |
| MDL | MFCD08692339 |
3-Bromo-4-hydroxy-5-nitropyridine - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 22 - Harmful if swallowed |
| WGK Germany | 3 |
| Hazard Class | IRRITANT |
3-Bromo-4-hydroxy-5-nitropyridine - Reference Information
| Introduction | 3-bromo-4-hydroxy-5-nitropyridine can be used as an intermediate in pharmaceutical synthesis. It can be prepared by reacting 3-nitropyridine -4-alcohol with acetic acid and bromine, it can be used to prepare another intermediate 3-bromo-N-cyclopropyl-5-nitropyridine-4-amine. |
| preparation | bromine (113g,713mmol,5eq) is added dropwise to a solution of 3-nitropyridine -4-alcohol (20g,142.76mmol,1eq.) in 50% aqueous acetic acid (250mL), the resulting mixture was stirred at room temperature for 20 hours, the resulting precipitate was filtered and washed with water to obtain 25g of intermediate 3-bromo-4-hydroxy-5-nitropyridine. |
Last Update：2024-04-09 20:49:11
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