Xanthopterin monohydrate5979-01-1100 % similar Pterin2236-60-445 % similar 7-Methylguanine578-76-740 % similar 6,7-Dimethylpterin611-55-238 % similar Guanine73-40-538 % similar Biopterin22150-76-138 % similar Guanine hydrochloride635-39-235 % similar 2-Amino-5,6-dimethyl-4(3H)-pyrimidinone3977-23-935 % similar Guanine sulfate10333-92-335 % similar 4-Hydroxy-2,5,6-triaminopyrimidine1004-75-734 % similar 2,5-Diamino-4,6-dihydroxypyrimidine40769-69-534 % similar Pteroic acid119-24-434 % similar 2,6-Diamino-5-nitroso-4(3H)-pyrimidinone2387-48-633 % similar 8-Azaguanine134-58-733 % similar 2-Amino-5-bromo-6-methyl-4-pyrimidinol6307-35-333 % similar 8-Mercaptoguanine28128-40-732 % similar 2,5-Diamino-4,6-dihydroxypyrimidine hydrochloride56830-58-132 % similar 2(1H)-Quinoxalinone1196-57-232 % similar Entecavir monohydrate209216-23-932 % similar 2,5,6-Triaminopyrimidin-4-ol sulfuric acid salt35011-47-331 % similar