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