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