Methyl 3-cyano-4-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-cyano-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-cyano-6-(fluoromethyl)-5-(trifluoromethoxy)pyridine-3-acetate
4-Cyano-2-(difluoromethyl)-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine