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