Used as a surface modifier in drug delivery systems to enhance particle stability and cellular uptake. Commonly applied in bioconjugation due to its reactive amine groups that bind to carboxyl or carbonyl moieties in proteins, antibodies, or fluorescent dyes. Employed in diagnostic assays and biosensors for immobilizing biomolecules on solid supports. Acts as a functional linker in nanotechnology for assembling hybrid nanostructures. Widely utilized in chromatography for stationary phase modification to improve selectivity and retention of acidic compounds. Also found in cosmetic and personal care formulations to control rheology and improve dispersion of active ingredients.