6-Chloro-2-(chloromethyl)-3-(trifluoromethoxy)pyridine-4-acetic acid
6-Chloro-4-(chloromethyl)-2-(trifluoromethoxy)pyridine-3-acetic acid
5-Chloro-2-(fluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetonitrile
2-Fluoro-5-iodo-3-(trifluoromethoxy)pyridine-6-acetic acid