APTS is widely used as a fluorescent labeling agent in biochemical and molecular biology research. It is particularly effective in labeling carbohydrates for analysis by capillary electrophoresis, enabling the detection and characterization of complex sugar molecules. This compound is also utilized in the study of glycoproteins and polysaccharides, providing high sensitivity and resolution in fluorescence-based assays. Additionally, APTS serves as a marker in DNA sequencing and other applications requiring fluorescent tagging due to its strong and stable fluorescence properties. Its water solubility and compatibility with various analytical techniques make it a valuable tool in scientific investigations.