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