Sample

CHEMICAL DETAILS SAMPLE ORIGIN SAMPLE PREP./SIZE PYROL. CONDITIONS TOTAL ION COUNTS

TETRAHEXOSYLCERAMIDE (glycosphingolipid) see insert in spectrum gift from Dr. R.W. Veh, Ruhr Universit├Ąt, Bochum, GFR suspension in PBS buffer; 10 yg standard 2 X 105

REMARKS - Sample prepared from bovine brain. This glycolipid spectrum is dominated by large peaks at m/z 97, 98, 110 and 126, all of which appear to be derived from the hexose and N-acetylhexosamine moieties. The origin of the unusually large peak at m/z 136 is yet unknown. Although contributions from the lipid moiety might be expected to appear, e.g. at m/z 28, 42, 56, 70 and 84 (alkene fragments), such mass peaks are not pronounced.

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