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