Used in bioconjugation processes to link peptides, proteins, or other biomolecules due to the maleimide group’s selective reaction with thiol groups under mild conditions. The amine group on the ethyl side allows for further modification using crosslinking agents, enabling the construction of complex molecular architectures. Commonly applied in the development of antibody-drug conjugates (ADCs), targeted therapies, and diagnostic probes. Its trifluoroacetate salt form improves solubility and stability in aqueous and organic solvent systems, making it suitable for use in a range of biochemical and pharmaceutical applications.