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