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