Other Notes Analog of coenzyme Q10 (not naturally occurring) Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. C7956.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin. Application Coenzyme Q1 (CoQ1) is a 1 isoprenyl group (not naturally occurring) member of a family of ubiquinones that share a quinine chemical group but differ in the number of isoprenyl chemical subunits in their tail. The CoQ compounds are lipid soluble components of cell membranes where they perform multiple functions such as electron and proton transport. The most well studied CoQ compound is CoQ10. CoQ1 is frequently used in comparison studies on the effect of isoprenyl chain length on CoQ functions or distribution and to identify quinone reductases.