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