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