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