| CAS No | 139755-82-1 |
| Category | SILDENAFIL. |
| Product Code | RBPL-S0101 |
| M.Formula | C21H28N6O4S |
| M.Weight | 460.55 |
| IUPAC | 5-[2-Ethoxy- 5-(1-piperazinyl sulfonyl) phenyl]- 1,6-dihydro- 1-methyl - 3-propyl - 7H-pyrazolo [4,3-d] pyrimidin -7-one |
| Synonyms | Sildenafil EP Impurity F; Desmethyl sildenafil ; UK 103320 |
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