4-(Bromomethyl)-2-cyano-3-(difluoromethyl)pyridine
4-Chloro-3-(difluoromethyl)pyridine-2-acetic acid
2-(Bromomethyl)-5-(difluoromethyl)-3-iodopyridine
4-Chloro-2-(difluoromethyl)pyridine-3-acetic acid
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