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