Ethyl 6-(chloromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-(chloromethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-(bromomethyl)-4-methoxy-5-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-(bromomethyl)-3-methoxy-6-(trifluoromethoxy)pyridine-5-carboxylate