3-Bromo-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-carboxaldehyde
2-Bromo-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxaldehyde
6-Chloro-2-cyano-3-hydroxy-4-(trifluoromethoxy)pyridine
2-Chloro-6-cyano-4-hydroxy-3-(trifluoromethoxy)pyridine