2-Bromo-3-(chloromethyl)-6-cyano-4-(trifluoromethoxy)pyridine
2-Bromo-6-chloro-3-(fluoromethyl)-5-(trifluoromethoxy)pyridine
6-Bromo-3-chloro-2-(fluoromethyl)-4-(trifluoromethoxy)pyridine
2-Bromo-5-hydroxy-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride