2,4-Diamino-6-hydroxypyrimidine sulfate 4(1H)-Pyrimidinone, 2,6-diamino-, sulfate 4(1H)-Pyrimidinone, 2,6-diamino-, sulfate (1:1) 4-Oxo-1H-pyrimidin-2,6-diamino-4(1H)-pyrimidinone 56-06-4 58470-85-2 AI3-61837 EINECS 261-271-0