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