1-Allyl-3-isobutyl-8-methylxanthine 1H-Purine-2,6-dione, 3,7-dihydro-8-methyl-3-(2-methylpropyl)-1-(2-propenyl)- 3,7-Dihydro-8-methyl-3-(2-methylpropyl)-1-(2-propenyl)-1H-purine-2,6-dione 81250-17-1