| Product name: | Allopurinol |
| Molecular Formula: | C5H4N4O |
| Molecular Structure: |  |
| Molecular Weight: | 136.1 |
| CAS No.: | 315-30-0 |
Description
Allopurinol is a white or almost white powder. It is very slightly soluble in water and in ethanol (96 per cent). It dissolves in dilute solutions of alkali hydroxides.
Application
Allopurinol is an anti-gout drug. It is suitable for various diseases such as gout, acute or chronic leukemia, which are primary or secondary serum uric acid.
Specification
| Appearance | White or almost white powder. |
| Heavy metals | ≤20 ppm |
| Loss on drying | ≤0.5% |
| Sulfated ash | ≤0.1% |
| Related substances: | |
| 5-amino-1H-pyrazole-4-carboxamide | ≤0.2% |
| 5-(formylamino)-1H-pyrazole-4-carboxamide | ≤0.1% |
| 5-(4H-1,2,4-triazol-4-yl)-1H-pyrazole-4-carboxamide | ≤0.1% |
Sum of impurities other than 5- amino-1H-pyrazole-4-carboxamide,5-(formylamino)-1H-pyrazole-4- carboxamide and 5-(4H-1,2,4- triazol-4-yl)-1H-pyrazole-4-carboxamide | ≤0.3% |
| Ethyl 5-amino-1H-pyrazole-4- carboxylate | ≤0.1% |
| Ethyl 5-(formylamino)-1Hpyrazole -4-carboxylate | ≤0.1% |
| Hydrazine | 10 ppm of hydrazine sulfate |
| Equivalent to 2.5 ppm of hydrazine | |
| Assay | 97.0%-102.0% |
Packing and Storage
Preserve in well-closed containers. Store at room temperature.
Minimum Order
One package
