1004-76-8 4(1H)-Pyrimidinone, 5,6-diamino-2,3-dihydro-2-thioxo- 4,5-Diamino-2-mercaptopyrimidine-6-ol 4,5-Diamino-2-thiouracil 4,5-Diamino-6-hydroxy-2-thiopyrimidine AI3-52253 EINECS 213-727-5 NSC 45759 Uracil, 5,6-diamino-2-thio- (VAN) (8CI)