2,4,5,6-Tetraaminopyrimidine hydrochloride39944-62-2100 % similar Tetraaminopyrimidine1004-74-688 % similar 2,4,5,6-Tetraaminopyrimidine sulfate49647-58-764 % similar 2,4,5,6-Tetraaminopyrimidine sulfate (1:1)5392-28-964 % similar 5-Nitroso-2,4,6-pyrimidinetriamine1006-23-147 % similar 2,6-Diaminopurine1904-98-935 % similar 4-Hydroxy-2,5,6-triaminopyrimidine1004-75-732 % similar 2,5-Diamino-4,6-dihydroxypyrimidine hydrochloride56830-58-130 % similar