Methyl 5-amino-2-(aminomethyl)-3-(difluoromethyl)pyridine-6-carboxylate
6-Amino-4-(chloromethyl)-2-(difluoromethyl)pyridine-3-acetonitrile
Methyl 4-amino-2-(aminomethyl)-6-(difluoromethyl)pyridine-3-carboxylate
2-Amino-3-(chloromethyl)-6-(difluoromethyl)pyridine-5-acetonitrile