Ethyl 5-(bromomethyl)-3-cyano-2-(trifluoromethoxy)pyridine-4-acetate
Ethyl 5-chloro-3-methyl-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 5-(bromomethyl)-4-cyano-2-(trifluoromethoxy)pyridine-3-acetate
Ethyl 5-chloro-4-methyl-2-(trifluoromethoxy)pyridine-3-carboxylate