4-Amino-2-(chloromethyl)-5-(difluoromethyl)pyridine-3-carboxaldehyde
6-Amino-2-(aminomethyl)-4-(difluoromethyl)pyridine-3-acetonitrile
5-Amino-2-(chloromethyl)-3-(difluoromethyl)pyridine-4-carboxaldehyde
5-Amino-3-(chloromethyl)-2-(difluoromethyl)pyridine-4-carboxaldehyde