6-(5-aminopyridin-2-yl)sulfonylpyridin-3-amine

5,5'-二氨基-2,2'-联吡啶

5-nitro-N-(5-nitropyridin-2-yl)pyridin-2-amine

N',N'-dimethyl-N-(5-nitropyridin-2-yl)ethane-1,2-diamine

2-(4-chloro-phenylsulfanyl)-5-nitro-pyridine