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