Synonyms: 2,6-DIAMINO-4-PYRIMIDINETHIOL, HEMISULFATE;2,4-DIAMINO-6-MERCAPTOPYRIMIDINE HEMISULFATE;4-thioxo-1H-pyrimidine-2,6-diammonium sulphate;2,4-Diamino-6-mercaptopyrimidine hemisulfate, 85%,tech;2,4-Diamino-6-mercaptopyrimidine hemisulfate, tech.