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