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