2-Bromo-6-(difluoromethyl)-5-methoxypyridine-3-carboxaldehyde
2-Bromo-5-(difluoromethyl)-3-iodopyridine-6-sulfonamide
2-Bromo-6-(difluoromethyl)-3-methoxypyridine-4-carboxaldehyde
6-Bromo-3-(difluoromethyl)-2-methoxypyridine-4-carboxaldehyde
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