1,3-Diisobutylxanthine 1H-Purine-2,6-dione, 3,7-dihydro-1,3-bis(2-methylpropyl)- 3,7-Dihydro-1,3-bis(2-methylpropyl)-1H-purine-2,6-dione 63908-24-7 BRN 1143460 Xanthine, 1,3-diisobutyl-