1,3,7,8-Tetramethylxanthine 1-Methyl-caffeine 1H-Purine-2,6-dione, 3,7-dihydro-1,3,7,8-tetramethyl- (9CI) 3,7-Dihydro-1,3,7,8-tetramethyl-1H-purine-2,6-dione 5-26-14-00172 (Beilstein Handbook Reference) 8-Methylcaffeine 832-66-6 BRN 0220502 Methylcaffeine Xanthine, 1,3,7,8-tetramethyl-