Remedy Ultra Herbicide will kill it, so it can no longer sprout. However, the dead wood would still remain and would need to be removed as it can take a while to decay. Remedy may be an option if you want to kill the stump, but are unable to remove it right now (laborious, large project, cost etc). Reasons, why you may need to quickly kill the stump, may be its producing unwanted sprouts, the root system is under concrete and ripping it, etc.