Displaying 16 results of Propafenone Stable Isotopes Propafenone Stable Isotopes are non-radioactive versions of propafenone, a medication used to treat irregular heartbeats. These isotopes have the same chemical and physical properties as the naturally occurring propafenone, but are produced in a way that ensures consistent isotopic composition. They are used in research and development of new medicines, as well as in clinical studies to help understand the pharmacokinetics and pharmacodynamics of propafenone. These isotopes are also used in forensic analysis to detect propafenone in biological samples.