Ethyl 3-cyano-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-4-acetate
2-Cyano-4-fluoro-3-(fluoromethyl)-5-(trifluoromethoxy)pyridine
Ethyl 6-cyano-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-cyano-6-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetate