BiomarkerOf 7-methylxanthine An oxopurine that is xanthine in which the hydrogen attached to the nitrogen at position 7 is replaced by a methyl group. It is an intermediate metabolite in the synthesis of caffeine. 61660 PFWLFWPASULGAN-UHFFFAOYSA-N CHEBI:48991 HMDB01991 InChI=1S/C6H6N4O2/c1-10-2-7-4-3(10)5(11)9-6(12)8-4/h2H,1H3,(H2,8,9,11,12) FOBI:030654 68374 C16353 Xanthines tea based beverage product coffee based beverage product cacao food product