Ethyl 3-cyano-2-(difluoromethyl)-6-nitropyridine-5-acetate
Ethyl 6-cyano-2-(difluoromethyl)-3-nitropyridine-4-acetate
3-Cyano-4-(difluoromethyl)-5-nitropyridine-2-sulfonyl chloride
4-Cyano-5-(difluoromethyl)-2-nitropyridine-3-sulfonamide
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