Displaying 3 results of Macitentan Stable Isotopes Macitentan stable isotopes are non-radioactive forms of the drug Macitentan, which is used to treat pulmonary arterial hypertension. These isotopes are used in research and clinical studies to study the pharmacokinetics and metabolism of Macitentan, as well as to determine its efficacy and safety. The stable isotopes allow for accurate and precise analysis of the drug's behavior in the body, which can help improve treatment strategies and patient outcomes.