oxypurine

ox·y·pu·rine

(ok'sē-pyū'rēn), A purine containing oxygen, for example, hypoxanthine, xanthine, uric acid.

oxypurine

(ok?se-pu'ren) [? + L. purus, pure, + urina, urine] An oxidation product of purine; includes hypoxanthine, xanthine, and uric acid. See: aminopurine; methyl purine