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