Dimethylxanthine may refer to the following xanthine derivatives with the formula C7H8N4O2 (molar mass: 180.16 g/mol):
Theophylline (1,3-dimethylxanthine) Paraxanthine (1,7-dimethylxanthine) Theobromine (3,7-dimethylxanthine)
See also Xanthine § Pharmacology for a list of additional methylated xanthine derivatives