Membrane carbohydrates, found on the extracellular surface, are complex and can display considerable variability in composition and structure. They are attached with embedded lipids forming glycolipids. Glycolipids constitute a complex family of amphipathic molecules structurally characterized by a hydrophilic mono- or oligo-saccharide moiety linked to a hydrophobic ceramide moiety.https://www.creative-biolabs.com/glycoprotein/custom-glycolipid-synthesis.htm