Synonyms: 2-5-diamino-4-6-dihydroxy-pyrimidine*hemisulfate;2,5-DIAMINO-4,6-DIHYDROXY-PYRIMIDINE HEMISULFATE SALT;2,5-DIAMINO-4,6-DIHYDROXYPYRIMIDINE, SULFATE (2:1) (SALT);2(1H)-PYRIMIDINONE, 4,6-DIAMINO-5-HYDROXY-, SULFATE (2:1) (SALT);2-5-DIAMINO-4-6-DIHYDROXY-PYRIMIDINE*HEM ISULFATE CR;2,5-Diamino-4,6-Dihydroxypyrimidi;2,5-DIAMINO-4,6-DIHYDROXYPYRIMIDINE HALF SULFATE SALT;2,5-Diamino-4,6-dihydropyrimidine hemisulfate salt