3-Hydroxy-4-(trifluoromethoxy)pyridine-2-sulfonamide
3-Hydroxy-2-(trifluoromethoxy)pyridine-4-sulfonamide
2-Fluoro-4-nitro-6-(trifluoromethoxy)pyridine
2-Hydroxy-5-(trifluoromethoxy)pyridine-3-sulfonamide
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