3-(Bromomethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine-6-acetonitrile
5-(Bromomethyl)-4-(difluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine
3-(Bromomethyl)-4-(difluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine
6-(Bromomethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-3-acetonitrile