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