5-Hydroxy-3-iodo-4-(trifluoromethoxy)pyridine-2-sulfonamide
6-Hydroxy-4-iodo-3-(trifluoromethoxy)pyridine-2-sulfonamide
2-Hydroxy-6-methoxy-3-methyl-4-(trifluoromethoxy)pyridine
6-Hydroxy-3-methoxy-4-methyl-2-(trifluoromethoxy)pyridine
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