3-(Aminomethyl)-2-bromo-4-(difluoromethyl)pyridine-6-carboxylic acid
5-Chloro-2-(chloromethyl)-4-(difluoromethyl)-3-fluoropyridine
5-Chloro-2-(chloromethyl)-3-(difluoromethyl)-4-fluoropyridine
4-Chloro-3-(chloromethyl)-6-(difluoromethyl)-2-fluoropyridine