5-(Difluoromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-3-acetic acid
3-(Difluoromethyl)-4-fluoro-5-(trifluoromethoxy)pyridine-2-acetic acid
5-(Chloromethyl)-3-fluoro-4-iodo-2-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-2-fluoro-3-iodo-4-(trifluoromethoxy)pyridine