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5-Hydroxyquinoline

8-Hydroxyquinoline

6-Hydroxyquinoline

7-Hydroxyquinoline

4-Hydroxyquinoline

2-Hydroxy-4-quinolincarboxylic acid

4-Hydroxyquinazoline

8-Hydroxyquinaldine

4-Hydroxy-2-pyrrolidone

(S)-4-Hydroxy-2-pyrrolidinone