1004-39-3 108766-37-6 2(1H)-Pyrimidinethione, 4,6-diamino- 2-Mercapto-4,6-diaminopyrimidine 3647-46-9 4,6-Diamino-2-mercaptopyrimidine 4,6-Diamino-2-thiopyrimidine 4,6-Diaminopyrimidine-2-thiol AI3-52092 EINECS 213-721-2 NSC 1586 NSC 680831