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