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