Methyl 4-(fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylate
4-(Fluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-6-acetic acid
6-(Chloromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-2-methanol
3-(Fluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-6-acetic acid