Displaying 3 results of Iminostilbene Stable Isotopes Iminostilbene Stable Isotopes are a set of non-radioactive isotopes that have the same number of protons and electrons as the naturally occurring element, but have a different number of neutrons. These isotopes are used in a variety of scientific applications, including medical research and drug development. They are highly stable and can be easily incorporated into molecules for use in experiments and studies.