3-(Chloromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-6-acetic acid
3-(Chloromethyl)-2-fluoro-6-(trifluoromethoxy)pyridine-4-acetic acid
2-(Bromomethyl)-5-fluoro-6-nitro-3-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-6-acetic acid