5-Cyano-4-(difluoromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine
4-Fluoro-6-hydroxy-3-(trifluoromethoxy)pyridine-2-acetic acid
2-Fluoro-6-hydroxy-3-(trifluoromethoxy)pyridine-4-acetic acid
2-Fluoro-3-hydroxy-4-(trifluoromethoxy)pyridine-5-acetic acid