Nolatrexed dihydrochloride152946-68-4100 % similar Nolatrexed147149-76-693 % similar Guanine hydrochloride635-39-233 % similar 2,5-Diamino-4,6-dihydroxypyrimidine hydrochloride56830-58-133 % similar 2-Amino-5,6-dimethyl-4(3H)-pyrimidinone3977-23-933 % similar Pterin2236-60-431 % similar 2-Amino-5-bromo-6-methyl-4-pyrimidinol6307-35-331 % similar 6,7-Dimethylpterin611-55-230 % similar 2-Amino-4-hydroxy-6-methylpyrimidine3977-29-530 % similar