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