7-Methylguanine578-76-7100 % similar Pterin2236-60-448 % similar 7-Methylxanthine552-62-546 % similar 6,7-Dimethylpterin611-55-243 % similar Theobromine83-67-042 % similar Xanthopterin monohydrate5979-01-140 % similar 2-Amino-5,6-dimethyl-4(3H)-pyrimidinone3977-23-940 % similar Guanine73-40-540 % similar Biopterin22150-76-139 % similar 2-Amino-5-bromo-6-methyl-4-pyrimidinol6307-35-337 % similar Guanine hydrochloride635-39-237 % similar 4-Hydroxy-2,5,6-triaminopyrimidine1004-75-736 % similar 2,5-Diamino-4,6-dihydroxypyrimidine40769-69-536 % similar Penciclovir39809-25-135 % similar Acyclovir59277-89-335 % similar 2,6-Diamino-5-nitroso-4(3H)-pyrimidinone2387-48-635 % similar Ganciclovir82410-32-035 % similar 8-Azaguanine134-58-734 % similar Guanine sulfate10333-92-333 % similar 8-Mercaptoguanine28128-40-733 % similar