1-ethyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid ethyl ester

(2-氯苯甲酰)乙酸乙酯

1-ethyl-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid methyl ester

ethyl (2'-chlorophenyl)-3-oxo-2-(N-ethylamino)methylene propionate

methyl 2-[(3-methoxy-3-oxopropyl)amino]benzoate