Synonyms: Carbostyril,3,4-dihydro-5-hydroxy- (8CI);3,4-Dihydro-5-hydroxycarbostyril;5-Hydroxy-1,2,3,4-tetrahydro-2-quinolinone;5-Hydroxy-3,4-dihydro-1H-quinolin-2-one;5-Hydroxy-3,4-dihydro-2(1H)-quinolinone;5-Hydroxy-3,4-dihydrocarbostyril;5-Hydroxy-3,4-dihydrocarbostyryl;