4-Hydroxy-5-iodo-2-(trifluoromethoxy)pyridine-3-sulfonamide
4-Hydroxy-2-iodo-5-(trifluoromethoxy)pyridine-3-sulfonamide
5-Hydroxy-3-iodo-2-(trifluoromethoxy)pyridine-4-sulfonamide
3-Hydroxy-5-methoxy-4-methyl-2-(trifluoromethoxy)pyridine
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