Etofylline519-37-9100 % similar Proxyphylline603-00-964 % similar Acefylline652-37-964 % similar Diprophylline479-18-564 % similar Doxofylline69975-86-660 % similar Caffeine58-08-259 % similar 1H-Purine-2,6-dione, 3,7-dihydro-1,3,7-trimethyl-, hydrate (1:1)5743-12-455 % similar Theofibrate54504-70-048 % similar Xanthinol nicotinate437-74-144 % similar Pentifylline1028-33-743 % similar Theacrine2309-49-143 % similar 3,7-Dihydro-3-methyl-7-propyl-1H-purine-2,6-dione55242-64-342 % similar 3,7-Dihydro-1,3,7,8-tetramethyl-1H-purine-2,6-dione832-66-642 % similar Oxtriphylline4499-40-542 % similar Theophylline58-55-941 % similar 1,3-Dimethylxanthine monohydrate5967-84-039 % similar Aminophylline317-34-037 % similar 1,3-Dipropyl-7-methylxanthine31542-63-937 % similar Paraxanthine611-59-636 % similar 9-(2-Hydroxyethyl)adenine707-99-334 % similar