3-Cyano-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-Cyano-2-(fluoromethyl)-6-hydroxy-5-(trifluoromethoxy)pyridine
3-Cyano-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-Fluoro-3-hydroxy-2-methyl-6-(trifluoromethoxy)pyridine