title: N-Methyl-N-nitrosourea mediated conversion of O6-methylguanine to xanthine.
mesh_terms: D000818:Animals; D003640:Dealkylation; D003641:Deamination; D006147:Guanine / Q000031:analogs & derivatives* / Q000378:metabolism; D066298:In Vitro Techniques; D008769:Methylnitronitrosoguanidine / Q000494:pharmacology; D008770:Methylnitrosourea / Q000494:pharmacology*; D009607:Nitrosourea Compounds / Q000494:pharmacology*; D051381:Rats; D014970:Xanthines / Q000378:metabolism*
chemical_list: D009607:Nitrosourea Compounds; D014970:Xanthines; D008769:Methylnitronitrosoguanidine; D006147:Guanine; D008770:Methylnitrosourea