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