Compound Name: Sildenafil EP Impurity C

Synonyms: 5-[2-Ethoxy-5-[(4-methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one; 

CAS Number: 139755-91-2

Molecular Formula: C20H26N6O4S

Molecular Weight: 446.52

Cat. Number: SIL1003