Displaying 11 results of Threonine Stable Isotopes Threonine stable isotopes are non-radioactive isotopes of the amino acid threonine. These isotopes are useful in a variety of research applications, including protein labeling, metabolic studies, and tracer experiments. By using threonine stable isotopes, researchers can track the movement and metabolism of this important amino acid in biological systems, providing valuable insights into cellular processes and disease mechanisms.