2-Bromo-3-cyano-4-(trifluoromethoxy)pyridine-6-carbonyl chloride
3-Bromo-6-chloro-2-(trifluoromethoxy)pyridine-4-carbonyl chloride
3-Bromo-2-chloro-5-(trifluoromethoxy)pyridine-6-carbonyl chloride
3-Bromo-6-chloro-4-(trifluoromethoxy)pyridine-2-carbonyl chloride