英文别名Vardenafil Dessulfonyl Impurity; Vardenafil Related Compound 1; 2-(2-Ethoxyphenyl)-5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one; 2-(2-ethoxyphenyl)-5-Methyl-7-propyliMidazo [5,1-f][1,2,4]triazin-4(3H)-one; 2-(2-ethoxyphenyl)-5-methyl-7-propyl-3h-imidazol[5,1-f][1,2,4]-triazin-4-one 
