2164-83-2 25286-67-3 4(1H)-Pyrimidinone, 6-hydroxy-5-nitro- 4,6-Dihydroxy-5-nitropyrimidine 4,6-Pyrimidinediol, 5-nitro- 5-Nitro-4,6-dihydroxypyrimidine 5-Nitropyrimidine-4,6-diol EINECS 218-504-6 NSC 36909