633328-33-3
3-bromo-1H-pyrazolo[4,3-b]pyridine
CAS: 633328-33-3
Molecular Formula: C6H4BrN3
633328-33-3 - Names and Identifiers
633328-33-3 - Physico-chemical Properties
| Molecular Formula | C6H4BrN3 |
| Molar Mass | 198.02 |
| Density | 1.894±0.06 g/cm3(Predicted) |
| Boling Point | 366.9±22.0 °C(Predicted) |
| pKa | 8.76±0.40(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
633328-33-3 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | 25 - Toxic if swallowed |
| Safety Description | 45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | 2811 |
| WGK Germany | 3 |
| Hazard Class | 6.1 |
| Packing Group | Ⅲ |
633328-33-3 - Reference Information
| Introduction | 3-bromo-1h-pyrazolo [4,3-B] pyridine is an organic intermediate, it can be prepared by reacting 3-fluoro-2-formylpyridine and hydrazine. |
| preparation | 3-fluoro-2-formylpyridine (1.02g, 8.15 mmol) the mixture with hydrazine (2 ml) was heated to 110 °c. After 16 h, the reaction mixture was poured onto ice water and extracted with ethyl acetate (3x 50 ml). The collected organic layer was washed with brine (100 ml), dried (magnesium sulfate), filtered and concentrated to give a dark brown oil. |
Last Update：2024-04-09 19:05:05
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