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