6-(Fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-4-acetic acid
2-(Fluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-3-acetic acid
3-(Fluoromethyl)-2-iodo-5-methyl-6-(trifluoromethoxy)pyridine
2-(Fluoromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-6-acetic acid