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