Displaying 1 results of Phentolamine Stable Isotopes Phentolamine Stable Isotopes are isotopically labeled versions of the drug Phentolamine, used to treat hypertension and other cardiovascular conditions. These stable isotopes are used in pharmacological studies to investigate the drug's metabolism, distribution, and excretion in the body. They are also used in clinical trials to determine the safety and efficacy of the drug in different patient populations. The stable isotopes are chemically identical to the natural drug, but have a different molecular weight, allowing for precise measurement and quantification in biological samples.