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