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Oxonic acid is a uricase inhibitor that prevents metabolism and excretion of uric acid (Item No. 16219) and induces embryotoxicity and nephrotoxicity in rats.1 It is a component of S-1, a mixture containing a prodrug of the antitumor agent 5-fluorouracil (5-FU; Item No. 14416), that suppresses the gastrointestinal toxicity of 5-FU without inhibiting its antitumor activity in rats.2 Formulations containing oxonic acid have been used to treat gastric, pancreatic, lung, head, neck, and breast carcinomas.3
WARNING This product is not for human or veterinary use.
1. Oxonic acid and fetal development: I. Embryotoxicity in mice. Toxicology 6(3), 289-297 (1976).
2. Tissue distribution and biotransformation of potassium oxonate after oral administration of a novel antitumor agent (drug combination of tegafur, 5-
3. Current development of anti-