2-Fluoro-3-(fluoromethyl)-5-iodo-6-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-5-fluoro-2-(trifluoromethoxy)pyridine-3-acetic acid
4-(Difluoromethyl)-2-fluoro-5-(trifluoromethoxy)pyridine-3-acetic acid
5-(Difluoromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine-4-acetic acid