4-(Chloromethyl)-2-(difluoromethyl)-3,6-diiodopyridine
3-(Chloromethyl)-4-(difluoromethyl)-2,5-diiodopyridine
4-(Chloromethyl)-5-(difluoromethyl)-2,3-diiodopyridine
5-(Bromomethyl)-2-(difluoromethyl)-3,4-diiodopyridine
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