2-Amino-4-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-acetic acid
3-Amino-2-(fluoromethyl)-6-iodo-4-(trifluoromethoxy)pyridine
2-Amino-4-(chloromethyl)-3-(trifluoromethoxy)pyridine-6-acetic acid
3-Amino-2-(fluoromethyl)-4-iodo-6-(trifluoromethoxy)pyridine