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