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