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