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