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