4-Chloro-1,2-dihydro-3-(ethoxycarbonyl)-1-methyl-2-oxoquinolineEthyl 4-chloro-1,2-dihydro-1-methyl-2-oxoquinoline-3-carboxylate4-Chloro-3-(ethoxycarbonyl)-1-methylquinolin-2(1H)-oneAI-1Ethyl 4-chloro-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylate4-Chloro-1,2-dihydro-1-methyl-2-oxo-3-quinolinecarboxylic acid ethyl esterethyl 4-chloro-1-methyl-2-oxo-1,2-dihydroquinoline-3-carboxylate