FeTPPS is widely used in biomedical research, particularly in studies involving oxidative stress and inflammation. It acts as a potent peroxynitrite scavenger, helping to mitigate damage caused by reactive nitrogen species in cellular environments. This makes it valuable in experimental models of diseases such as neurodegeneration, cardiovascular disorders, and ischemia-reperfusion injury. Additionally, FeTPPS is utilized in the development of therapeutic strategies targeting conditions where peroxynitrite plays a critical role. Its ability to modulate oxidative pathways also contributes to its use in understanding and treating conditions linked to excessive oxidative stress.