6-Bromo-3-(chloromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid
2-Bromo-5-(chloromethyl)-3-(trifluoromethoxy)pyridine-6-acetic acid
2-Bromo-4-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-acetic acid
2-Bromo-3-fluoro-5-(trifluoromethoxy)pyridine-6-acetic acid