2-Cyano-6-(difluoromethyl)pyridine-4-sulfonyl chloride
3-(Difluoromethyl)-2-nitropyridine-6-sulfonamide
2-(Difluoromethyl)-4-nitropyridine-6-sulfonamide
5-(Difluoromethyl)-3-nitropyridine-2-sulfonyl chloride
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