3-Fluoro-4-hydroxy-2-(trifluoromethoxy)pyridine-5-acetonitrile
3-Fluoro-2-hydroxy-5-(trifluoromethoxy)pyridine-6-acetonitrile
4-(Difluoromethyl)-3-fluoro-6-(trifluoromethoxy)pyridine-2-acetic acid
4-(Difluoromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine-6-acetic acid