What is "hypoxanthin"

Hypoxanthin \Hy`po*xan"thin\, n. [Pref. hypo- + xanthin.] (Physiol. Chem.) A crystalline, nitrogenous substance, closely related to xanthin and uric acid, widely distributed through the animal body, but especially in muscle tissue; -- called also sarcin, sarkin.

n. (context organic compound English) A crystalline nitrogenous substance, closely related to xanthin and uric acid, found throughout the animal body but especially in muscle tissue.