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