3-Hydroxy-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-acetic acid
3-(Fluoromethyl)-4-hydroxy-5-iodo-2-(trifluoromethoxy)pyridine
2-(Bromomethyl)-4-hydroxy-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
3-Hydroxy-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-4-acetic acid