2,5,6-Triamino-4-pyrimidinol sulfate39267-74-836 % similar 2-Amino-6-hydroxy-4(3H)-pyrimidinone56-09-735 % similar Xanthopterin monohydrate5979-01-135 % similar Nolatrexed147149-76-635 % similar 2-Amino-4,6-dimethyl pyrimidine767-15-734 % similar Biopterin22150-76-134 % similar Guanine sulfate10333-92-333 % similar 2-Amino-6-chloro-4(1H)-pyrimidinone1194-21-433 % similar 2-Amino-4-methoxy-6-methyl-1,3,5-triazine1668-54-833 % similar 2-Aminoisocytosine56-06-433 % similar Dihydrobiopterin6779-87-933 % similar Nolatrexed dihydrochloride152946-68-433 % similar 2-Amino-4-chloro-6-methylpyrimidine5600-21-532 % similar 6-Chloro-1,3,5-triazine-2,4-diamine3397-62-432 % similar 4,6-Dichloro-1,3,5-trazin-2-amine933-20-032 % similar Tetrahydrobiopterin17528-72-232 % similar Sapropterin62989-33-732 % similar 4,6-Difluoro-2-pyrimidinamine675-11-631 % similar Sapropterin dihydrochloride69056-38-830 % similar Penciclovir39809-25-130 % similar