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