1,3-Dimethyluric acid944-73-0100 % similar 8-Chlorotheophylline85-18-765 % similar 8-(Dimethylamino)-3,9-dihydro-1,3-dimethyl-1H-purine-2,6-dione5426-47-164 % similar 3,9-Dihydro-1,3-dimethyl-8-(phenylmethyl)-1H-purine-2,6-dione2879-15-452 % similar Theophylline58-55-950 % similar Pamabrom606-04-249 % similar Aminophylline317-34-048 % similar 1,3-Dimethylxanthine monohydrate5967-84-047 % similar Theacrine2309-49-141 % similar Dimenhydrinate523-87-539 % similar Furafylline80288-49-938 % similar 3,7-Dihydro-1,3,7,8-tetramethyl-1H-purine-2,6-dione832-66-637 % similar 1-Methylxanthine6136-37-437 % similar Englate8000-10-036 % similar Ibmx28822-58-436 % similar 5,6-Diamino-1,3-dimethyluracil5440-00-634 % similar Caffeine58-08-233 % similar Oxtriphylline4499-40-533 % similar Etofylline519-37-931 % similar 3-Methylxanthine1076-22-831 % similar