Synonym(s):
Sildenafil citrate salt 1-[[3-(4 7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4 3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine citrate salt 5-[2-Ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-4H-pyrazolo[5 4-e]pyrimidin-7-one citrate salt Revatio UK-92 480
