4,6-Diamino-2-methylthio-5-pyrimidine sulfonic acid 5-Pyrimidinesulfonic acid, 4,6-diamino-2-(methylthio)- 5-Pyrimidinesulfonic acid, 4,6-diamino-2-methylthio- 53286-05-8 NSC65399 WLN: T6N CNJ BS1 DZ ESWQ FZ