6-Chloro-2-cyano-3-(difluoromethyl)pyridine-4-carboxaldehyde
2-(Aminomethyl)-4-bromo-6-(difluoromethyl)pyridine-3-acetic acid
2-Chloro-6-cyano-3-(difluoromethyl)pyridine-5-carboxaldehyde
2-(Aminomethyl)-4-bromo-5-(difluoromethyl)pyridine-3-acetic acid