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