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