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