2(1H)-Quinolinone 2(1H)-Quinolone 2-(1H)-QUINOLINONE 2-Hydroxyquinoline 2-Quinolinol 2-Quinolinone 2-Quinolone 493-62-9 59-31-4 AI3-00782 CCRIS 4327 Carbostyril Carbostyril (VAN) (8CI) EINECS 200-420-6 NSC 156783 alpha-Hydroxyquinoline alpha-Quinolone o-Aminocinnamic acid lactam