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