Displaying 3 results of Fenoterol Stable Isotopes Fenoterol is a bronchodilator medication commonly used to treat asthma and other respiratory conditions. Fenoterol stable isotopes are non-radioactive versions of the medication that are used in medical research and drug development. These isotopes have the same chemical properties as regular fenoterol, but they can be more easily tracked and measured in laboratory experiments. Fenoterol stable isotopes are an important tool for understanding how the medication works in the body and developing new treatments for respiratory diseases.