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