Methyl 3-(fluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 4-(fluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-(fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 4-(fluoromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxylate