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