2-(Chloromethyl)-6-iodo-3-nitro-5-(trifluoromethoxy)pyridine
6-(Fluoromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-3-acetic acid
6-(Chloromethyl)-3-iodo-2-nitro-4-(trifluoromethoxy)pyridine
2-(Fluoromethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine-3-acetic acid