4-Chloro-2-hydroxy-3-(trifluoromethoxy)pyridine-5-acetonitrile
6-Chloro-3-(chloromethyl)-4-(trifluoromethoxy)pyridine-2-acetonitrile
5-Chloro-3-hydroxy-4-(trifluoromethoxy)pyridine-2-acetonitrile
2-Chloro-4-(chloromethyl)-5-iodo-3-(trifluoromethoxy)pyridine