2-Quinolinecarboxylic acid, 4-hydroxy- 4-Hydroxyquinaldic acid 4-Hydroxyquinaldinic acid 4-Hydroxyquinoline-2-carboxylic acid 492-27-3 CCRIS 4428 EINECS 207-751-5 KYNURENIC ACID Kinurenic acid Kynuronic acid NSC 58973 Quinaldic acid, 4-hydroxy- (8CI) Quinurenic acid