5-Chloro-3-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-(Bromomethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
4-Chloro-2-chloromethyl-6-hydroxypyridine
3-(Chloromethyl)-4-(difluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine