has role xanthine 9H-xanthine 2,6-dioxo-1,2,3,6-tetrahydropurine An oxopurine in which the purine ring is substituted by oxo groups at positions 2 and 6 and N-9 is protonated. PDBeChem:XAN Gmelin:913730 9H-purine-2,6-(1H,3H)-dione CHEBI:10059 CHEBI:46377 CHEBI:27317 XANTHINE BPDB:2153 Xanthine xanthine CAS:69-89-6 PMID:22770225 chebi_ontology 2,6-dihydroxypurine HMDB:HMDB0000292 CHEBI:17712 Xan purine-2(3H),6(1H)-dione Reaxys:609330 KEGG:C00385 7H-xanthine Saccharomyces cerevisiae metabolite