Sodium metaiodobenzoate is a medical drug that is used in radioisotope diagnostics and treatment of cancer. One of the main active components of this drug is the isotope of iodine (iodvium) - iodine-131, which is labeled with tritium. Tritium is a radioactive isotope of hydrogen that has a very short beta half-life (only 5.8 hours). This feature makes it an ideal isotope for labeling, as it allows it to be quickly removed from the body and safely used as a label for other elements, for example, for medical applications in radioiodtabonna, holmcretane, galen, etc.