1H-Purine-2,6-dione, 3,7-dihydro-3, 7-dimethyl-1-(2-methyl-2-propenyl)- 3,7-Dimethyl-1-(2-methyl-2-propenyl)-3,7-dihydro-1H-purine-2,6-dione 63906-62-7 AIDS-125511 AIDS125511 NSC74796