Used in research to study cancer biology, particularly in targeting gastrin-releasing peptide receptors which are overexpressed in certain tumors such as prostate, lung, and pancreatic cancers. Shows potential as a cytotoxic agent when conjugated to chemotherapeutic drugs, enabling targeted delivery to cancer cells. Investigated for its ability to inhibit tumor growth and induce apoptosis in preclinical models. Also explored in diagnostic imaging when labeled with radioisotopes for tumor detection. Not approved for clinical use; strictly for experimental purposes.