4-(Bromomethyl)-2-(difluoromethyl)pyridine-6-sulfonyl chloride
5-(Bromomethyl)-3-(difluoromethyl)pyridine-2-sulfonyl chloride
2-(Bromomethyl)-4-(difluoromethyl)-3,5-diiodopyridine
5-(Bromomethyl)-4-(difluoromethyl)pyridine-2-sulfonyl chloride
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