RADIOACTIVE IODINE COMPOUND FOR LABELING AN ANTIBODY

摘要

The radioactive iodine compound of this invention or an intermediate for preparing the compound is represented by the following formula (I): (I) wherein R is H or 125I. The radioactive compound can readily introduce a radioactive isotope element such as 125I into an antibody molecule without damaging the activity of the antibody molecule. Therefore, the compound can preferably be used to label an antibody of immunoradiometric assay, and allow a higher degree of measurement sensitivity.