4-(Bromomethyl)-3-cyano-2-(difluoromethyl)pyridine
3-(Bromomethyl)-2-(difluoromethyl)-4-iodopyridine
4-(Bromomethyl)-2-cyano-3-(difluoromethyl)pyridine
4-Chloro-3-(difluoromethyl)pyridine-2-acetic acid
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