8-Quinolinecarboxylic acid, 3-benzoyl-1,2-dihydro-4-hydroxy-2-oxo-, methyl ester 90181-98-9 Methyl 3-benzoyl-1,2-dihydro-4-hydroxy-2-oxo-8-quinolinecarboxylate Methyl 3-benzoyl-4-hydroxy-2-quinolone-8-carboxylate