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