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