4-Bromo-3-(difluoromethyl)-6-nitropyridine-2-sulfonyl chloride
4-Bromo-3-(difluoromethyl)-5-nitropyridine-2-sulfonyl chloride
3-Bromo-6-(difluoromethyl)-4-iodopyridine-2-carboxaldehyde
3-Bromo-5-(difluoromethyl)-6-methoxy-2-nitropyridine
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