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