Ethyl 3-amino-4-(chloromethyl)-5-(difluoromethyl)pyridine-2-carboxylate
4-Amino-3-(bromomethyl)-2-(difluoromethyl)pyridine-6-methanol
3-Amino-2-(bromomethyl)-6-(difluoromethyl)pyridine-5-carboxylic acid
4-Amino-3-(bromomethyl)-2-(difluoromethyl)pyridine-6-carboxylic acid