2-Amino-5-bromo-3-(difluoromethyl)pyridine-6-acetonitrile
2-Amino-4-bromo-6-(difluoromethyl)pyridine-3-acetonitrile
4-(Difluoromethyl)-3,6-diiodopyridine-2-acetonitrile
5-(Bromomethyl)-4-(difluoromethyl)-2,3-diiodopyridine
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