PHPS1 is primarily used in biomedical research, particularly in the study of oxidative stress and cellular signaling pathways. It acts as a scavenger of reactive oxygen species (ROS), helping to protect cells from oxidative damage. This property makes it valuable in experiments aimed at understanding inflammation, aging, and neurodegenerative diseases. It is also utilized in studies involving mitochondrial function due to its ability to modulate redox balance within cells. Its cell-permeable nature allows for effective intracellular delivery, enhancing its utility in in vitro models.