Sub Group: All Inhibitors Catalog Number: 6047 Formula: C25H34N6O3 CAS Number: 831217-01-7 Molecular Weight: 466.58 Synonyms:5-[2-Ethoxy-5-[2-(4-ethyl-1-piperazinyl)acetyl]phenyl]-1,6-dihydro-1-methyl -3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-oneHongdenafil