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