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