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