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