methyl 2-(5-nitropyridin-2-yl)acetate

2-(benzenesulfonyl)-5-nitropyridine

1-(5-氨基吡啶-2-基)吡咯烷-3-氨基甲酸叔丁酯

4-(5-nitropyridin-2-yl)oxyphenol

N-(2-甲氧基乙基)-5-硝基吡啶-2-胺