It comprises the xanthine group and the uric acid group of bodies.
The artificial preparation of theobromine and caffeine from xanthine, and guanine also show clearly their relations.
This precipitate we treat with cold alcohol, which leaves behind the fatty acids, and dissolves the xanthine.
xanthine xan·thine (zān'thēn', -thĭn)
A yellowish-white crystalline purine base that is a precursor of uric acid and is found in blood, urine, and muscle tissue.
Any of several derivatives of this compound.