2-Bromo-6-(difluoromethyl)-3-hydroxypyridine-5-sulfonamide
2-Bromo-3-(difluoromethyl)-5-iodopyridine-6-acetic acid
2-Bromo-3-(difluoromethyl)-6-hydroxypyridine-4-sulfonamide
3-Bromo-4-(difluoromethyl)-2-nitropyridine-5-acetic acid
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