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