5-Chloro-4-cyano-2-hydroxy-3-(trifluoromethoxy)pyridine
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