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