Oxtriphylline4499-40-5100 % similar Etofylline519-37-942 % similar Theophylline58-55-939 % similar 1,3-Dimethylxanthine monohydrate5967-84-037 % similar Aminophylline317-34-036 % similar Theacrine2309-49-134 % similar Caffeine58-08-234 % similar Diprophylline479-18-534 % similar Proxyphylline603-00-933 % similar Choline62-49-733 % similar Acefylline652-37-933 % similar Doxofylline69975-86-633 % similar 1,3-Dimethyluric acid944-73-033 % similar 1H-Purine-2,6-dione, 3,7-dihydro-1,3,7-trimethyl-, hydrate (1:1)5743-12-432 % similar Ibmx28822-58-432 % similar 8-(Dimethylamino)-3,9-dihydro-1,3-dimethyl-1H-purine-2,6-dione5426-47-132 % similar Choline bicarbonate78-73-931 % similar Choline hydroxide123-41-131 % similar Trimethyl(2-hydroxyethyl)ammonium iodide17773-10-331 % similar Trimethyl(2-hydroxyethyl)ammonium bromide1927-06-631 % similar