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