3-(Bromomethyl)-5-(difluoromethyl)-2-methoxypyridine-6-acetonitrile
5-(Bromomethyl)-4-(difluoromethyl)-2-methoxypyridine-3-acetonitrile
5-(Bromomethyl)-4-(difluoromethyl)-3-methoxypyridine-2-acetonitrile
4-(Bromomethyl)-2-(difluoromethyl)-5-methoxypyridine-3-acetonitrile