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