2,6-Dihydroxy-3-(trifluoromethoxy)pyridine-4-sulfonamide
2,5-Dihydroxy-3-(trifluoromethoxy)pyridine-4-sulfonamide
2,4-Dihydroxy-3-(trifluoromethoxy)pyridine-5-sulfonamide
2,3-Diamino-5-methyl-6-(trifluoromethoxy)pyridine
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