Used as an active pharmaceutical ingredient in targeted drug delivery systems, particularly in antibody-drug conjugates (ADCs). Its structure enables stable linkage between monoclonal antibodies and cytotoxic agents, allowing selective release of the drug in tumor tissues. The compound’s amide and ester functionalities support conjugation and controlled cleavage in physiological environments, enhancing therapeutic efficacy while minimizing systemic toxicity. Commonly applied in oncology research for developing next-generation chemotherapeutics with improved specificity and reduced side effects.