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