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