Hydroxythioacetildenafil 1-[3-(6,7-Dihydro-1-Methyl-3-propyl-7-thioxo-1H-pyrazolo[4,3-d]pyriMidin-5-yl)-4-ethoxyphenyl]-2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanone 5-[2-Ethoxy-5-[2-[4-(2-hydroxyethyl)-1-piperazinyl]acetyl]phenyl]-1,6-dihydro-1-Methyl-3-propyl-7H-7-thio-pyrazolo[4,3-d]pyriMidine 1-[4-ethoxy-3-(1-methyl-3-propyl-7-sulfanylidene-4H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl]-2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanone Ethanone, 1-[3-(6,7-dihydro-1-methyl-3-propyl-7-thioxo-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]-2-[4-(2-hydroxyethyl)-1-piperazinyl]- Hydroxythioacetildenafil Solution, 100μg/mL Hydroxythioacetildenaf i1