4-Chloro-6-cyano-3-(difluoromethyl)-2-nitropyridine
4-Chloro-2-cyano-3-(difluoromethyl)-6-nitropyridine
5-Chloro-3-cyano-2-(difluoromethyl)-4-nitropyridine
3-Chloro-5-cyano-6-(difluoromethyl)pyridine-2-sulfonyl chloride
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