4-(Bromomethyl)-6-cyano-3-hydroxy-2-(trifluoromethoxy)pyridine
3-(Bromomethyl)-5-cyano-2-hydroxy-4-(trifluoromethoxy)pyridine
5-(Bromomethyl)-4-cyano-3-hydroxy-2-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-3-fluoro-4-methyl-2-(trifluoromethoxy)pyridine