Ethyl 4-cyano-3-(difluoromethyl)-6-iodopyridine-2-carboxylate
Methyl 3-cyano-2-(difluoromethyl)-4-iodopyridine-5-acetate
3-Cyano-2-(difluoromethyl)-5-iodopyridine-4-carbonyl chloride
4-Cyano-5-(difluoromethyl)-2-iodopyridine-3-sulfonyl chloride
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