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