6-hydrazinylpyridin-3-amine

2-N-丁氧基-5-硝基吡啶

2-((5-硝基-2-吡啶基)硫代)-嘧啶

N-乙基-5-硝基吡啶-2-胺

diethyl 2-acetamido-2-(5-nitropyridin-2-yl)propanedioate