5-Cyano-2-methoxy-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-Cyano-6-(fluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine
4-Cyano-6-methoxy-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-Cyano-5-(fluoromethyl)-2-methoxy-3-(trifluoromethoxy)pyridine