Used as a key intermediate in the synthesis of targeted cancer therapies, particularly in the development of kinase inhibitors. Its structure enables selective binding to specific enzyme sites involved in tumor growth, making it valuable in pharmaceutical research for creating more effective and precise oncology drugs. Commonly employed in the preparation of antibody-drug conjugates (ADCs), where it acts as a linker component to attach cytotoxic agents to monoclonal antibodies, enhancing drug delivery to cancer cells while minimizing damage to healthy tissues.