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