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