0 Vardenafil CAS 224785-90-4 In APIs, Pharmaceutical Chemicals, Products 224785-90-4,Vardenafil,2-[2-Ethoxy-5-(4-ethylpiperazin-1-yl-1-sulfonyl)phenyl]-5-methyl-7-propyl-3H-imidazo[5,1-f][1,2,4]triazin-4-one