Methyl 4-chloro-2-cyano-3-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 4-bromo-5-nitro-2-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 5-chloro-3-cyano-4-(trifluoromethoxy)pyridine-2-carboxylate
4-Bromo-3-(fluoromethyl)-2-iodo-5-(trifluoromethoxy)pyridine