N-(6-Aminohexyl)maleimide Hydrochloride is widely used in bioconjugation and protein labeling applications. It is particularly effective for modifying thiol groups in proteins, peptides, and other biomolecules, enabling the creation of stable covalent bonds. This chemical is commonly employed in the development of antibody-drug conjugates (ADCs), where it links cytotoxic drugs to antibodies for targeted cancer therapy. It is also utilized in the preparation of fluorescent or enzyme-labeled probes for imaging and diagnostic purposes. Additionally, it serves as a crosslinking agent in the study of protein-protein interactions and the assembly of molecular complexes. Its reactivity with thiols makes it a valuable tool in biochemical research and biotechnological applications.