5-Amino-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetic acid
3-Amino-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-4-methanol
3-Amino-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid
5-Amino-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-acetic acid