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