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