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