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