132560-20-4 1H-Purine-2,6-dione, 3,7-dihydro-7-(2,3-dihydroxypropyl)-1-methyl-3-(2-methylpropyl)- BRN 4203006 Xanthine, 7-(2,3-dihydroxypropyl)-3-isobutyl-1-methyl-