2-氨基-6-氟-3-硝基苯甲酸乙酯

2-methyl-1-(1-oxopropoxy)propyl-2-butyl-6-ethoxy-3-<<2'-1H-tetrazol-5-yl<1,1'-biphenyl>-4-yl>oxy>-5-quinoxalinecarboxylate

2-butyl-3-chloro-6-ethoxyquinoxaline-5-carboxylic acid

2-butyl-6-ethoxy-5-(hydroxycarbonyl)quinoxalin-3(4H)-one

2-butyl-6-ethoxy-(5-ethoxycarbonyl)quinoxalin-3(4H)-one