2-氯甲基-4-甲氧基-吡啶

4-氯-2-吡啶甲醇

(4-硝基吡啶-2-基)乙酸甲酯

N,N-dimethyl-4-[2-(1-oxidopyridin-1-ium-2-yl)ethenyl]aniline

2-甲基-6-苯基吡啶