Used in pharmaceutical research as a key intermediate for synthesizing targeted cancer therapies, particularly in the development of antibody-drug conjugates (ADCs). Its structure enables stable linkage between monoclonal antibodies and cytotoxic agents, allowing precise delivery of drugs to tumor cells while minimizing damage to healthy tissues. Also investigated for use in bioconjugation techniques due to its selective reactivity and functional handle for labeling biomolecules. Shows promise in improving the pharmacokinetics and efficacy of novel oncology treatments.