Ethyl 4-(chloromethyl)-3-cyano-5-(trifluoromethoxy)pyridine-2-carboxylate
3-(Bromomethyl)-2-cyano-6-methyl-4-(trifluoromethoxy)pyridine
Ethyl 2-cyano-3-methyl-4-(trifluoromethoxy)pyridine-6-carboxylate
3-(Bromomethyl)-2-cyano-4-methyl-6-(trifluoromethoxy)pyridine