Noun
English Wikipedia has an article on:hypoxanthineWikipedia
hypoxanthine (countable and uncountable, plural hypoxanthines)
(organic chemistry) A bicyclic heterocycle, 3,7-dihydropurin-6-one, that is an intermediate in the biosynthesis of uric acid.
Examples include C → U and A → HX ( hypoxanthine ), which can be corrected by DNA repair mechanisms; and 5MeC ( 5-methylcytosine ) → T, which is less likely to be detected as a mutation because thymine is a normal DNA base. Source: Internet
Similarly, uric acid can be formed when AMP is deaminated to IMP from which the ribose unit is removed to form hypoxanthine. Source: Internet
It is an analog of hypoxanthine that is hydroxylated by xanthine oxidoreductase at the 2-position to give oxipurinol. Source: Internet