Used in bioconjugation processes to link biomolecules such as proteins and peptides to other molecules, including fluorescent dyes, drugs, or polymers. The aldehyde group formed after hydrolysis reacts selectively with nucleophiles like hydrazines or alkoxyamines, enabling stable bioconjugate formation under mild conditions. Commonly applied in the development of antibody-drug conjugates (ADCs), diagnostic probes, and targeted therapeutics where controlled, site-specific coupling is essential. Also utilized in surface functionalization of nanoparticles and biosensors due to its efficient and selective reactivity.