ethyl 4-(4-(benzylamino)-3-nitrophenyl)-3-methyl-4-oxo-butanoate

4-(4-benzylamino-3-nitro-phenyl)-3-methyl-4-oxo-butyric acid

6-(4-氯-3-硝基苯基)-4,5-二氢-5-甲基-3(2H)-吡嗪酮

苄胺

4-(4-氯-3-硝基苯基)-3-甲基-4-氧代丁酸