– C.I. Food Blue 5:2, a multifunctional dye, serves various roles in both scientific and traditional industries. In research and clinical diagnostics, it facilitates the observation and analysis of cell structures, tracking of biomolecules, evaluation of cell functions, differentiation of cell types, detection of biomolecules, tissue pathology studies, and monitoring of microorganisms. Additionally, its uses extend to traditional textile dyeing and emerging applications in functional textile processing, food pigments, and dye-sensitized solar cells.