2-(Bromomethyl)-6-(difluoromethyl)pyridine
3-(Chloromethyl)-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-(Difluoromethyl)pyridine-2-sulfonyl chloride
2-(Chloromethyl)-6-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxaldehyde