3,7-Dihydro-3-methyl-7-propyl-1H-purine-2,6-dione55242-64-3100 % similar Theobromine83-67-063 % similar 3-Methylxanthine1076-22-846 % similar Etofylline519-37-942 % similar 8-Bromo-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1H-purine-2,6-dione666816-98-440 % similar Proxyphylline603-00-938 % similar Acefylline652-37-936 % similar 1,3-Dipropyl-7-methylxanthine31542-63-935 % similar 6-Amino-1-methyluracil2434-53-935 % similar 6-Amino-1-methyl-5-nitroso-2,4(1H,3H)-pyrimidinedione6972-78-735 % similar Diprophylline479-18-534 % similar Doxofylline69975-86-633 % similar Caffeine58-08-231 % similar 1-Methyluracil615-77-031 % similar