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