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