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