2929-14-8 4-22-00-02513 (Beilstein Handbook Reference) 4-Hydroxy-8-methoxy-2-quinolinecarboxylic acid 4-Hydroxy-8-methoxyquinaldic acid 8-Methoxy-4-hydroxyquinoline-2-carboxylic acid 8-Methyl ether of xanthurenic acid BRN 0202789 Quinaldic acid, 4-hydroxy-8-methoxy- Xanthurenic acid 8-methyl ether Xanthurenic acid-8-methyl ether