4-(Chloromethyl)-2-hydroxy-5-nitro-3-(trifluoromethoxy)pyridine
3-(Bromomethyl)-2-hydroxy-4-methoxy-5-(trifluoromethoxy)pyridine
6-(Chloromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine-4-acetonitrile
6-(Bromomethyl)-2-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine