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