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