Synonyms:
7h-pyrazolo[4,3-d]pyrimidin-7-one,5-[2-ethoxy-5-[2-(4-ethyl-1-piperazinyl)acetyl]phenyl]-1,6-dihydro-1-methyl-3-propyl- ; hongdenafil ; acetildenafil ; 7h-pyrazolo[4,3-d]pyrimidin-7-one,5-[2-ethoxy-5-[(4-ethyl-1-piperazinyl)acetyl]phenyl]-1,4-dihydro-1-methyl-3-propyl-(9ci) ; 7h-pyrazolo[4,3-d]pyrimidin-7-one, 5-[2-ethoxy-5-[2-(4-ethyl-1-piperazinyl)acetyl]phenyl]-1,6-dihydro-1-methyl-3-propyl- ; 5-[2-ethoxy-5-[2-(4-ethyl-piperazin-1-yl)-acetyl]-phenyl]-1-methyl-3-propyl-1,6-dihydro-pyrazolo[4,3-d]pyrimidin-7-one ; 5-[2-ethoxy-5-[2-(4-ethylpiperazin-1-yl)acetyl]phenyl]-1-methyl-3-propyl-6h-pyrazolo[4,3-d]pyrimidin-7-one ; acetildenafil (hongdenafil) ; 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-one