Ethyl 4-chloro-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 4-chloro-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetate
Ethyl 5-chloro-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetate
Ethyl 3-chloro-5-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetate