Theobromine83-67-0100 % similar 3,7-Dihydro-3-methyl-7-propyl-1H-purine-2,6-dione55242-64-363 % similar 3-Methylxanthine1076-22-849 % similar Caffeine58-08-249 % similar 7-Methylxanthine552-62-546 % similar Caffeine monohydrate5743-12-445 % similar Paraxanthine611-59-645 % similar 8-Bromo-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1H-purine-2,6-dione666816-98-442 % similar 7-Methylguanine578-76-742 % similar 6-Amino-1-methyl-5-nitroso-2,4(1H,3H)-pyrimidinedione6972-78-742 % similar 1-Methyluracil615-77-039 % similar 1-(3-Chloropropyl)theobromine74409-52-238 % similar Pentifylline1028-33-738 % similar 6-Amino-1-methyluracil2434-53-936 % similar Pentoxifylline6493-05-636 % similar Proxyphylline603-00-935 % similar 1,3-Dipropyl-7-methylxanthine31542-63-934 % similar Etofylline519-37-933 % similar 2-(Acetyloxy)benzoic acid mixt. with 3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione53908-20-633 % similar Acefylline652-37-932 % similar