3-Amino-2-hydroxy-4-(trifluoromethoxy)pyridine-6-sulfonamide
2-Amino-6-hydroxy-5-(trifluoromethoxy)pyridine-3-sulfonamide
2-Amino-5-iodo-6-nitro-3-(trifluoromethoxy)pyridine
2-Amino-6-hydroxy-3-(trifluoromethoxy)pyridine-5-sulfonamide
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