Coumarin 510 is widely used as a fluorescent dye in various scientific and industrial applications. Its strong fluorescence properties make it valuable in biological staining, particularly for labeling and tracking cellular components under microscopy. In biochemistry, it is employed as a probe to study molecular interactions and dynamics. Additionally, it is utilized in the development of optical brighteners and sensors due to its ability to emit bright light upon excitation. In material science, Coumarin 510 is incorporated into polymers and coatings to create fluorescent markers or enhance optical properties. Its stability and efficiency also make it a popular choice in laser dyes for tuning and research purposes.