2(1H)-Quinolinone, 7-chloro-4-methyl- 2540-09-2 7-Chloro-4-methyl-2-quinolinol 7-Chloro-4-methylquinolin-2(1H)-one Carbostyril, 7-chloro-4-methyl- (8CI) EINECS 219-814-4 NSC 131506