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