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