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