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