4,5-Diamino-6-hydroxy-2-mercaptopyrimidine1004-76-8100 % similar 4,5-Diamino-2,6-dimercaptopyrimidine31295-41-757 % similar 5,6-Diaminouracil3240-72-057 % similar 2,4(1H,3H)-Pyrimidinedione, 5,6-diamino-, sulfate (1:?)32014-70-344 % similar 2-Mercapto-4(3H)-quinazolinone13906-09-737 % similar 6-Aza-2-thiothymine615-76-936 % similar 1,2,3,7,8,9-Hexahydro-2,8-dithioxo-6H-purin-6-one15986-32-036 % similar 6-Amino-2-thiouracil1004-40-635 % similar 2-Thioxanthine2487-40-335 % similar 2-Thiothymine636-26-034 % similar 4-Hydroxy-2,5,6-triaminopyrimidine1004-75-733 % similar 2,5-Diamino-4,6-dihydroxypyrimidine40769-69-533 % similar Trithiocyanuric acid638-16-433 % similar 2,5-Diamino-4,6-dihydroxypyrimidine hydrochloride56830-58-131 % similar 5-Amino-1,2,3,6-tetrahydro-2,6-dioxo-4-pyrimidinecarboxylic acid7164-43-431 % similar