Tetraxetan (DOTA) is a macrocyclic chelating agent. Tetraxetan can form stable coordination complexes with a variety of metal ions (e.g., 68Ga, 111In, 177Lu). Tetraxetan can be conjugated with targeting molecules (e.g., RGD peptide, folic acid) to enable the complex to target specific biomolecules or cells. Tetraxetan can be used for imaging studies of tumors, including melanoma and folate receptor-positive tumors (e.g., cervical cancer) [1][2][3].
