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