Methyl 4-(difluoromethyl)-2-nitropyridine-5-acetate
Methyl 3-(difluoromethyl)-5-nitropyridine-4-acetate
3-Cyano-5-(difluoromethyl)pyridine-4-sulfonyl chloride
2-Cyano-6-(difluoromethyl)pyridine-4-sulfonyl chloride
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