2-Amino-4-(chloromethyl)-3-(difluoromethyl)pyridine-5-acetic acid
6-Amino-2-(bromomethyl)-3-(difluoromethyl)pyridine-4-methanol
6-Amino-2-(bromomethyl)-4-(difluoromethyl)pyridine-3-methanol
3-Amino-6-(bromomethyl)-2-(difluoromethyl)-5-(trifluoromethyl)pyridine