2-Amino-3-methoxy-5-nitro-6-(trifluoromethoxy)pyridine
2-Amino-5-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-acetic acid
2-Amino-5-(chloromethyl)-4-(trifluoromethoxy)pyridine-3-acetic acid
3-Amino-6-methoxy-2-(trifluoromethoxy)pyridine-5-acetic acid