1124-33-0 4-Nitropyridine 1-oxide 4-Nitropyridine N-oxide 4-Nitropyridine oxide 4-Nitropyridine-N-oxide AI3-25256 Avitrol 100 CCRIS 1207 Caswell No. 604AA EINECS 214-395-4 EPA Pesticide Chemical Code 597300 HSDB 6415 NSC 5079 PYRIDINE, 4-NITRO-, 1-OXIDE p-Nitropyridine N-oxide