1193-24-4 18337-68-3 4(1H)-Pyrimidinone, 6-hydroxy- 4(3H)-Pyrimidinone, 6-hydroxy- 4,6-DIHYDROXYPYRIMIDINE 4,6-Dihydroxypyrimidin [German] 4,6-Pyrimidinediol 6-Hydroxy-1H-pyrimidin-4-one 6-Hydroxy-4(1H)-pyrimidinone EINECS 214-772-3 NSC 22838