4-(Difluoromethyl)-5-iodopyridine-2-sulfonyl chloride
3-(Bromomethyl)-4-cyano-5-(difluoromethyl)pyridine
3-(Chloromethyl)-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
3-(Bromomethyl)-2-cyano-5-(difluoromethyl)pyridine
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