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