2-(Difluoromethyl)-4-methoxypyridine-5-sulfonamide
5-(Difluoromethyl)-2-(fluoromethyl)-3-nitropyridine
5-(Chloromethyl)-2-(difluoromethyl)-3-nitropyridine
5-(Difluoromethyl)-2-methoxypyridine-4-sulfonyl chloride
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