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