3-(Aminomethyl)-2-chloro-6-(difluoromethyl)pyridine-4-acetic acid
3-(Bromomethyl)-6-chloro-4-(difluoromethyl)-2-fluoropyridine
5-(Bromomethyl)-3-chloro-4-(difluoromethyl)-2-fluoropyridine
6-(Aminomethyl)-3-chloro-2-(difluoromethyl)pyridine-4-acetic acid