2-Cyano-3-(fluoromethyl)-4-methoxy-6-(trifluoromethoxy)pyridine
4-(Bromomethyl)-2-cyano-3-methoxy-6-(trifluoromethoxy)pyridine
3-(Bromomethyl)-4-cyano-2-methoxy-6-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-cyano-6-methoxy-2-(trifluoromethoxy)pyridine