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