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