Paraxanthine611-59-6100 % similar Caffeine58-08-253 % similar Caffeine monohydrate5743-12-449 % similar 2,6-Dichloro-7-methyl-7H-purine2273-93-048 % similar 7-Methylxanthine552-62-546 % similar 1-Methylxanthine6136-37-445 % similar Theobromine83-67-045 % similar 1-(3-Chloropropyl)theobromine74409-52-238 % similar Pentifylline1028-33-738 % similar 6-Chloro-3-methyl-2,4(1H,3H)-pyrimidinedione4318-56-336 % similar Etofylline519-37-936 % similar Pentoxifylline6493-05-636 % similar 2-(Acetyloxy)benzoic acid mixt. with 3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione53908-20-635 % similar 7-Methyladenine935-69-335 % similar Proxyphylline603-00-935 % similar Acefylline652-37-935 % similar 1,3-Dipropyl-7-methylxanthine31542-63-934 % similar 7-Methylguanine578-76-733 % similar 3,7-Dihydro-1,3,7,8-tetramethyl-1H-purine-2,6-dione832-66-633 % similar Diprophylline479-18-533 % similar