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