6,7-diisobutoxy-4-keto-1H-quinoline-3-carboxylic acid ethyl ester

4-Hydroxy-6,7-di(isobutyloxy)-3-quinolinecarboxylic acid ethyl ester

3-Quinolinecarboxylic acid, 4-hydroxy-6,7-bis(2-Methylpropoxy)-, ethyl ester