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