4-Cyano-3-(difluoromethyl)pyridine-5-sulfonyl chloride
3-(Bromomethyl)-2-(difluoromethyl)pyridine-4-carboxylic acid
2-(Bromomethyl)-6-(difluoromethyl)pyridine-3-carboxylic acid
4-Cyano-2-(difluoromethyl)pyridine-5-sulfonyl chloride
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