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