Synonyms: Carbostyril,1,4-dimethyl- (6CI,7CI,8CI); 1,4-Dimethyl-1,2-dihydroquinolin-2-one;1,4-Dimethyl-2(1H)-quinolinone; 1,4-Dimethyl-2(1H)-quinolone;1,4-Dimethyl-2(H)-quinolinone; 1,4-Dimethyl-2-oxo-1,2-dihydroquinoline;1,4-Dimethyl-2-quinolone; 1,4-Dimethylcarbostyril; NSC 108420