Ethyl 5-amino-3-(bromomethyl)-2-(difluoromethyl)pyridine-4-acetate
Ethyl 3-amino-5-(bromomethyl)-4-(difluoromethyl)pyridine-2-acetate
6-Amino-4-(chloromethyl)-3-(difluoromethyl)pyridine-2-acetonitrile
Ethyl 5-amino-4-(bromomethyl)-2-(difluoromethyl)pyridine-3-acetate