Ethyl 3-cyano-2-methoxy-5-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-cyano-2-methoxy-4-(trifluoromethoxy)pyridine-5-acetate
Methyl 5-chloro-4-(chloromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 6-cyano-2-methoxy-4-(trifluoromethoxy)pyridine-3-acetate