Furafylline80288-49-9100 % similar 3,9-Dihydro-1,3-dimethyl-8-(phenylmethyl)-1H-purine-2,6-dione2879-15-442 % similar 8-Chlorotheophylline85-18-738 % similar 1,3-Dimethyluric acid944-73-038 % similar Theophylline58-55-936 % similar 8-(Dimethylamino)-3,9-dihydro-1,3-dimethyl-1H-purine-2,6-dione5426-47-136 % similar Ibmx28822-58-436 % similar Aminophylline317-34-036 % similar 1,3-Dimethylxanthine monohydrate5967-84-034 % similar Dimenhydrinate523-87-533 % similar Pamabrom606-04-232 % similar 1-Furfurylpyrrole1438-94-431 % similar