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