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