5-Chloro-3-(difluoromethyl)-4-nitropyridine-2-sulfonamide
5-(Chloromethyl)-3-cyano-2-(difluoromethyl)-4-fluoropyridine
3-Chloro-4-(difluoromethyl)-2-nitropyridine-5-sulfonamide
4-Cyano-2-(difluoromethyl)-6-fluoropyridine-3-acetonitrile
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