Tamarixin is primarily used in biomedical research for its ability to inhibit serine proteases, particularly trypsin-like enzymes. This inhibitory action makes it valuable in studying proteolytic pathways involved in inflammation, cancer progression, and viral entry into cells. It has been explored for its potential to modulate immune responses by controlling enzyme activity in signaling cascades. Due to its stability and specificity, Tamarixin is also used as a reference inhibitor in enzyme kinetics studies and in the development of diagnostic assays where precise control of protease activity is required.