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