132560-10-2 1H-Purine-2,6-dione, 3,7-dihydro-3,8-bis(2-methylpropyl)-1-methyl- 3,7-Dihydro-3,8-bis(2-methylpropyl)-1-methyl-1H-purine-2,6-dione BRN 4198151 Xanthine, 3,8-diisobutyl-1-methyl-