2-氯-3-硝基吡啶

2-(3-nitro-2-pyridylamino)pyridine 1-oxide

3-(2-pyridyl)-3H-1,2,3-triazolo(5,4-b)pyridine

3-nitro-N-pyridin-2-ylpyridin-2-amine

N-p-tolylsulfonyl-2,2'-dipyridylamine