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