Ethyl 4-amino-3-(chloromethyl)-6-(difluoromethyl)pyridine-2-carboxylate
Methyl 3-amino-6-(bromomethyl)-2-(difluoromethyl)pyridine-4-carboxylate
2-Amino-3-(bromomethyl)-6-(difluoromethyl)pyridine-4-carboxylic acid
Ethyl 4-amino-3-(chloromethyl)-2-(difluoromethyl)pyridine-6-carboxylate