Used primarily in research settings to study inflammatory pathways, particularly as a metabolite of zileuton. It plays a role in the investigation of 5-lipoxygenase inhibition, which is relevant in asthma and other inflammatory conditions. Its formation helps scientists understand drug metabolism and the duration of therapeutic activity of zileuton in the body. Due to its biological activity, it is also examined for potential contributions to the overall anti-inflammatory effects observed during zileuton treatment.