Synonyms: 2-Pyrimidinethiol,4,6-diamino- (6CI);2-Mercapto-4,6-diaminopyrimidine;2-Thio-6-aminocytosine;4,6-Diamino-1,2-dihydro-2-thioxopyrimidine;4,6-Diamino-1H-pyrimidine-2-thione;4,6-Diamino-2-mercaptopyrimidine;4,6-Diamino-2-pyrimidinethiol;4,6-Diamino-2-thiopyrimidine;4,6-Diamino-2-thiouracil;4,6-Diaminopyrimidine-2-thione;NSC 1586;NSC 680831;