1,3-Dimethyl-4-hydroxycarbostyril 2(1H)-Quinolinone, 1,3-dimethyl-4-hydroxy- 2(1H)-Quinolinone, 4-hydroxy-1,3-dimethyl- 32606-02-3 5-21-12-00340 (Beilstein Handbook Reference) BRN 1531135 CARBOSTYRIL, 1,3-DIMETHYL-4-HYDROXY- Carbostyril, 4-hydroxy-1,3-dimethyl- (8CI) NSC 193539