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