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