Avanafil 330784-47-9Mirodenafil 862189-95-5SildenafilSildenafil Citrate 171599-83-0Sildenafil Mesylate 139755-83-2Dimethyl Sildenafil 1416130-63-6HydroxyhomosildenafilHomosildenafil 642928-07-2Thiosildenafil 479073-79-5ThiohomosildenafilN-Desmethyl Sildenafil 139755-82-1Thiodimethyl Sildenafil (Dimethylthiosildenafil) 1260112-90-0Pyrazole N-desmethyl sildenafilSildenafil HClBenzyl SildenafilN-Desmethyl sildenafil 139755-82-1Sildenafil N-OxideSildenafil amideSildenafil Amine HClTadalafilAminotadalafil 385769-84-6DeMethyltadalafil 171596-36-4Nortadalafil; DeMethyltadalafil ;N-DesMethyl Tadalafil;Tadalafil IMpurity:IMpurity C;(6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydropyrazino[1,2:1,6]pyrido[3,4-b]indole-1,4-dione;(6R-trans)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydropyrazino[1,2:1,6]pyrido[3,4-b]indole-1,4-dionemethyltadalafil 171488-11-2acetaminotadalafilmethylhydroxyhomosildenafilUdenafil 268203-93-6VardenafilVardenafil HCl 224785-90-4Hydroxy VardenafilAcetildenafil (Hongdenafil) 831217-01-7Dimethyl acetildenafil N/ADioxohongdenafilN-Desmethyl AcetildenafilHydroxy acetildenafilNor-acetildenafil 949091-38-7Piperi acetildenafil Estrone 18850-57-5PDE-5 Inhibitor (Sildenafil Related Compound)Sildenafil Impurity A Related Compound (Isomer of Isobutyl Sildenafil)Sildenafil Impurity (1-methyl-4-Nitro -3-n-propyl pyrazole-5- carboxylic acid)Sildenafil Analogue I (Propoxyphenyl-Thiohydroxyhomosildenafil) 479073-90-0