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