Used in research to inhibit the IDO1 (indoleamine 2,3-dioxygenase 1) enzyme, which plays a key role in immune regulation. By blocking IDO1, this compound helps restore T-cell activity and enhance immune responses against tumor cells. It is primarily applied in cancer immunotherapy studies to evaluate its potential in combination with other immune-modulating agents. Also used in biochemical assays to study tryptophan metabolism pathways and immune suppression mechanisms in the tumor microenvironment.

Additionally, it is employed to investigate the role of IDO1 in other chronic conditions associated with inflammation and immune dysregulation, such as Alzheimer's disease, depression, and autoimmune disorders.