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