Description_x000D_ Application_x000D_ 5-Methoxytryptophol may be used as an analytical reference standard for the quantification of the analyte in biological samples using different chromatography techniques._x000D_ Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support._x000D_ Other Notes_x000D_ Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. M4126.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.