4-Cyano-2-(difluoromethyl)-3-fluoropyridine-6-acetic acid
2-Cyano-5-(difluoromethyl)-3-iodopyridine-6-acetonitrile
4-Cyano-5-(difluoromethyl)-3-fluoropyridine-2-sulfonyl chloride
4-Cyano-3-(difluoromethyl)-2-fluoropyridine-5-sulfonyl chloride
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