This chemical is primarily used as a photosensitizer in photodynamic therapy (PDT) for treating certain types of cancer and bacterial infections. It works by generating reactive oxygen species when exposed to light, which then destroy targeted cells. Additionally, it is employed in antimicrobial applications, particularly for disinfecting surfaces or treating localized infections, due to its ability to inactivate pathogens upon light activation. In research, it serves as a dye for studying cellular processes and visualizing biological structures under microscopy. Its light-sensitive properties also make it useful in photochemical studies and as a component in light-activated systems.