2-Chloro-6-cyano-4-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Chloro-4-cyano-2-(fluoromethyl)-5-(trifluoromethoxy)pyridine
2-Chloro-5-cyano-6-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Chloro-2-cyano-5-(fluoromethyl)-6-(trifluoromethoxy)pyridine