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