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