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Technical Data
| CAS Number | 22407-20-1 |
|---|---|
| Alternate CAS# | N/A |
| Molecular Formula | C5H6N4O2 |
| Molecular Weight | 154.13 g/mol |
| IUPAC Chemical Name | 5-formamido-1H-pyrazole-4-carboxamide |
| Synonyms | Allopurinol EP Impurity B; Allopurinol USP Related Compound B |
| USP Name | Allopurinol USP Related Compound B |
| EP Name | Allopurinol EP Impurity B |
| Appearance Specifications | White to Off-White Solid |
| Storage Condition | Refrigerator, under inert atmosphere, Protect from light |
| Material Type | Primary Standard |
| Melting Point | >370 °C (dec.) |
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