4-Chloro-5-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-(Bromomethyl)-5-fluoro-6-methoxy-3-(trifluoromethoxy)pyridine
2-(Difluoromethyl)-4-fluoropyridine-3-carboxaldehyde
4-(Difluoromethyl)-3-iodo-6-methoxy-2-(trifluoromethoxy)pyridine