Ethyl 2-chloro-3-cyano-5-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-chloro-3-cyano-4-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-chloro-3-cyano-4-(trifluoromethoxy)pyridine-5-acetate
Ethyl 3-bromo-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetate