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