Displaying 11 results of Quinidine Stable Isotopes Quinidine stable isotopes are non-radioactive forms of the medication quinidine, which is used to treat certain heart conditions. These stable isotopes have a unique atomic structure that makes them useful in scientific research and medical applications. They can be used to study the metabolism and pharmacokinetics of quinidine, as well as to develop new drugs and diagnostic tests. Quinidine stable isotopes are also important tools for quality control and calibration in pharmaceutical manufacturing.