Acyclovir59277-89-333 % similar 2,5,6-Triamino-4-pyrimidinol sulfate35011-47-333 % similar 2,5,6-Triamino-4-pyrimidinol sulfate39267-74-833 % similar Ganciclovir82410-32-032 % similar Xanthopterin monohydrate5979-01-132 % similar 2-Amino-6-hydroxy-4(3H)-pyrimidinone56-09-732 % similar O-(6)-Methylguanine20535-83-531 % similar Dideoxyguanosine85326-06-330 % similar 4,6-Diamino-2-mercaptopyrimidine1004-39-330 % similar 2-Amino-6-chloro-4(1H)-pyrimidinone1194-21-430 % similar 2-Amino-6-methylpyrimidin-4-one3977-29-530 % similar 2-Aminoisocytosine56-06-430 % similar