(4-aminopyridin-3-yl) N,N-diethylcarbamate

N,N-diethyl-N'-(3-hydroxypyridin-4-yl)methanimidamide

3-(3-甲氧基苯基)吡啶

4-碘-3-羟基吡啶

3-羟基-4-氨基吡啶