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