Methyl 5-bromo-2-cyano-3-(trifluoromethoxy)pyridine-6-carboxylate
6-Bromo-2-chloro-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine
Methyl 4-bromo-3-cyano-6-(trifluoromethoxy)pyridine-2-carboxylate
2-Bromo-6-chloro-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine