2,4-Diamino-6-hydroxypyrimidine56-06-4100 % similar 2-Amino-6-hydroxy-4(3H)-pyrimidinone56-09-759 % similar 2,6-Diamino-4(3H)-pyrimidinethione56-08-658 % similar 2-Amino-6-chloro-4(1H)-pyrimidinone1194-21-455 % similar 2-Amino-4-hydroxy-6-methylpyrimidine3977-29-555 % similar Isocytosine108-53-244 % similar 2,5-Diamino-4,6-dihydroxypyrimidine hydrochloride56830-58-141 % similar 4-Hydroxy-2,5,6-triaminopyrimidine1004-75-740 % similar 2,5-Diamino-4,6-dihydroxypyrimidine40769-69-540 % similar 4,6-Difluoro-2-pyrimidinamine675-11-639 % similar 6-Amino-2-methyl-4(3H)-pyrimidinone767-16-838 % similar Guanine hydrochloride635-39-238 % similar Guanine73-40-537 % similar 6-Aminouracil873-83-636 % similar 4,6-Dichloro-2,5-pyrimidinediamine55583-59-036 % similar 2,6-Diamino-5-nitroso-4(3H)-pyrimidinone2387-48-635 % similar 6-Amino-2-thiouracil1004-40-634 % similar 4,6-Dichloro-2-pyrimidinamine56-05-334 % similar 2-Amino-4,6-dimethylpyrimidine767-15-734 % similar Pterin2236-60-434 % similar