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