Chemical Name: Acetildenafil CAS: 831217-01-7 Synonyms: Hongdenafil;Acetildenafil;Acetildenafil (Hongdenafil);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-ethyl-1-piperazinyl)acetyl]phenyl]-1,6-dihydro-1-methyl -3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one;7H-Pyrazolo[4,3-d]pyriMidin-7-one, Molecular Formula: C25H34N6O3 Formula Weight: 466.583 Assay: 99% MP: 131-133°C Storage temp: Refrigerator Chemical Properties: Off-White to Pale Yelow Solid Usage: Acetildenafil is a drug used to treat erectile dysfunction (impotence) in males and pulmonary arterial hypertension (PAH).