4,6-Diamino-2-hydroxy-5-pyrimidine sulfonic acid 5-Pyrimidinesulfonic acid, 4,6-diamino-1,2-dihydro-2-oxo- (9CI) 5-Pyrimidinesulfonic acid, 4,6-diamino-2-hydroxy- 74039-24-0 BRN 0534099 NSC 65400