Brn 0212288

3-Carbethoxy-4-hydroxyquinaldine

4-Hydroxy-2-methyl-3-quinolinecarboxylic acid ethyl ester

2-Methyl-4-hydroxyquinoline-3-carboxylic acid ethyl ester

3-Quinolinecarboxylic acid, 4-hydroxy-2-methyl-, ethyl ester