Supplementary Figure 8: 20 keV Arn GCIB Orbitrap negative ion MS of reference lipid C24:1 Mono-Sulfo Galactosyl(ß) Ceramide (d18:1/24:1) (C48H90NO11S).

(A) n = 1000, (B) n = 5500 and (C) n = 10000. Inset shows detail of the molecular ion, C48H90NO11S−, revealing little fragmentation for this particular species. Results presented are from single measurements.