Displaying 13 results of Quercetin Stable Isotopes Quercetin stable isotopes are isotopically labeled forms of quercetin, a flavonoid found in many fruits and vegetables. These stable isotopes are used in scientific research to study the metabolism and pharmacokinetics of quercetin in vivo. They can be used to track the fate of quercetin in biological systems and to determine its bioavailability and distribution. Quercetin stable isotopes are valuable tools for understanding the role of quercetin in human health and disease.