Anthracene-9,10-dipropionic acid disodium salt is primarily used in biochemical and medical research as a fluorescent probe. Its application is significant in studying cellular processes, particularly in tracking and imaging biological molecules due to its strong fluorescence properties. This compound is also utilized in the development of diagnostic assays, where it helps in detecting specific biomolecules through fluorescence-based techniques. Additionally, it serves as a useful tool in photodynamic therapy research, aiding in the study of light-activated treatments for various diseases. Its ability to interact with biological systems while providing clear fluorescence makes it valuable in advancing scientific understanding and medical diagnostics.