2-氰基-5-甲基吡啶

2-氯-5-甲基-3-硝基吡啶

4-(5-甲基-2-氧代-1(2H)-吡啶基)苯腈

5-(bromomethyl)-2-pyridin-2-ylpyridine

1-(4-methoxyphenyl)-5-methylpyridin-2-one