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