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