2-Fluoro-5-hydroxy-3-(trifluoromethoxy)pyridine-4-acetic acid
2-Chloro-6-(chloromethyl)-4-(trifluoromethoxy)pyridine-3-acetic acid
4-(Bromomethyl)-6-cyano-2-(trifluoromethoxy)pyridine-3-acetonitrile
2-Chloro-5-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-acetic acid