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