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