Used as a fluorescent dye in biological imaging and staining applications. Its lipophilic nature allows it to penetrate cell membranes, making it suitable for labeling intracellular structures. Commonly employed in microscopy to track cellular processes and visualize organelles due to its strong emission under UV or visible light excitation. Also utilized in flow cytometry for cell population analysis. The long alkyl chain enhances solubility in organic solvents and improves retention in lipid environments.