2-(Aminomethyl)-4-bromo-3-(difluoromethyl)pyridine-5-carboxylic acid
5-Bromo-2-(chloromethyl)-4-(difluoromethyl)pyridine-3-carboxylic acid
5-(Aminomethyl)-3-bromo-4-(difluoromethyl)pyridine-2-carboxaldehyde
4-Bromo-6-(chloromethyl)-2-(difluoromethyl)pyridine-3-carboxylic acid