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