Biochem/physiol Actions Acts as an electron carrier and antioxidant in humans Other Notes Non-naturally occurring analog of coenzyme Q10. Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. C8081.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.