Displaying 4 results of Adrenaline Stable Isotopes Adrenaline Stable Isotopes are isotopically labeled versions of adrenaline, a hormone and neurotransmitter that plays a critical role in the fight or flight response. These labeled compounds are used in scientific research to study the metabolism, regulation, and function of adrenaline in the body. Adrenaline Stable Isotopes are highly pure and stable, making them ideal for use in mass spectrometry, NMR spectroscopy, and other analytical techniques.