2-Bromo-4-(difluoromethyl)-3-hydroxypyridine-6-sulfonamide
2-Bromo-3-(difluoromethyl)-6-hydroxypyridine-5-sulfonamide
2-Bromo-3-(difluoromethyl)-5-hydroxypyridine-6-sulfonamide
3-Bromo-2-(bromomethyl)-4-(difluoromethyl)-5-nitropyridine
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