Edotreotide is a peptide similar to Octreotide. The N-terminus of the peptide chain contains a large number of carboxyl functional groups, and the N-terminus is an alcoholic hydroxyl functional group, and contains a relatively stable disulfide bond structure. Edotreotide can combine with various radionuclides to form a substance that can be used to treat and diagnose certain neuroendocrine tumors.