Ethyl 4-bromo-3-(difluoromethyl)-6-nitropyridine-2-carboxylate
4-Bromo-6-(difluoromethyl)-3-methylpyridine-2-sulfonamide
Ethyl 4-bromo-3-(difluoromethyl)-5-nitropyridine-2-carboxylate
4-Bromo-2-(difluoromethyl)-3-methylpyridine-6-sulfonamide
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