Displaying 5 results of Promethazine Stable Isotopes Promethazine stable isotopes are a set of non-radioactive isotopes that exhibit the same chemical and physical properties as the naturally occurring promethazine compound. These isotopes are used extensively in research and industrial applications to track the behavior and distribution of promethazine in biological and environmental systems. They are also used in the development of new drugs and therapeutic agents that target promethazine-related pathways. The availability of stable isotopes of promethazine has greatly enhanced the accuracy and precision of analytical methods used to study this important compound.