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