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