英文别名Vardenafil Oxopiperazine (Impurity); Vardenafil N-Desethyl Oxopiperazine Impurity; Vardenafil Impurity 8; Vardenafil N-Desethyl Oxopiperazine; 2-{2-ethoxy-5-[(3-oxo-1-piperazinyl)sulfonyl]phenyl}-5-methyl-7-propylimidazo[5,1-f]-1,2,4-triazin-4(3H)-one; Imidazo[5,1-f][1,2,4]triazin-4(1H)-one, 2-[2-ethoxy-5-[(3-oxo-1-piperazinyl)sulfonyl]phenyl]-5-methyl-7-propyl-; 2-(2-ethoxy-5-((3-oxopiperazin-1-yl)sulfonyl)phenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one; 2-[2-Ethoxy-5-[(3-oxo-1-piperazinyl)sulfonyl]phenyl]-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one; 2-(2-Ethoxy-5-((3-oxopiperazin-1-yl)sulfonyl)phenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(3H)-one 
