Pterin2236-60-4100 % similar Biopterin22150-76-153 % similar 6,7-Dimethylpterin611-55-253 % similar Guanine73-40-553 % similar Guanine hydrochloride635-39-249 % similar 7-Methylguanine578-76-748 % similar 8-Azaguanine134-58-746 % similar Xanthopterin monohydrate5979-01-145 % similar 8-Mercaptoguanine28128-40-745 % similar Guanine sulfate10333-92-343 % similar 2-Amino-5,6-dimethyl-4(3H)-pyrimidinone3977-23-942 % similar Pteroic acid119-24-441 % similar 4-Hydroxy-2,5,6-triaminopyrimidine1004-75-741 % similar 2,5-Diamino-4,6-dihydroxypyrimidine40769-69-541 % similar Lumazine487-21-839 % similar Penciclovir39809-25-139 % similar Acyclovir59277-89-339 % similar 2-Amino-5-bromo-6-methyl-4-pyrimidinol6307-35-338 % similar Ganciclovir82410-32-038 % similar 2,5-Diamino-4,6-dihydroxypyrimidine hydrochloride56830-58-138 % similar