3-(Bromomethyl)-2-cyano-4-methoxy-6-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-cyano-2-methoxy-6-(trifluoromethoxy)pyridine
2-(Bromomethyl)-4-cyano-3-methoxy-6-(trifluoromethoxy)pyridine
5-Chloro-2-methoxy-3-(trifluoromethoxy)pyridine-4-acetic acid