Notes: C22 Phytoceramide-d3 is intended for use as an internal standard for the quantification of C22 phytoceramide (Item No. 9003464) by GC- or LC-MS. C22 Phytoceramide is a sphingolipid that has been found in Moro blood orange (C. sinensis) peels.{53677} It has also been found in primary human astrocytes.{53678} [Matreya, LLC. Catalog No. 2217]