英文别名Vardenafil Chlorosulfone Impurity; 3-(1,4-Dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxy-benzenesulfonyl Chloride; Vardenafil Chlorosulfone Imp; 4-ethoxy-3-(5-methyl-4-oxo-7-propyl-1H-imidazo[5,1-f][1,2,4]triazin-2-yl)benzenesulfonyl chloride; Benzenesulfonyl chloride, 3-(1,4-dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxy-; 5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one; 5-[5-(chlorosulphonyl)-2-ethoxyphenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one; 4-ethoxy-3-(5-methyl-4-oxo-7-propyl-3,4-dihydroimidazo[5,1-f][1,2,4]triazin-2-yl)-benzenelsulfonic acid chloride; 5-(5-Chlorosulphonyl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one; 2-(2-ethoxy-5-chlorosulfonyl)-phenyl-5-methyl-7-n-propyl-3H-imidazolo[5,1-f][1,2,4]triazine-4-one; 5-(2-ethoxy-5-chlorosulfonyl)-phenyl-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidine-7-one; 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride; 5-(2-ethoxy-5-chlorosulphonyl-phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidine-7-one; 4-ethoxy-3-(5-methyl-4-oxo-7-propyl-3,4-dihydro-imidazo[5,1-f][1,2,4]triazin-2-yl)-benzenesulphonyl chloride 
