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. Author manuscript; available in PMC: 2022 May 18.
Published in final edited form as: Anal Chem. 2021 May 6;93(19):7332–7340. doi: 10.1021/acs.analchem.1c01021

Figure 5.

Figure 5.

The identification of double bond position from the monounsaturated fatty acyl side chain on cerebrosides. (a) The CID spectrum of 443 Da loss ion from [β-GlcCer(d18:1/18:0)−H + MgTerpy]+. (b) The CID spectrum of 443 Da loss ion from [β-GlcCer(d18:1/18:1 (n-9))−H + MgTerpy]+. The inserts are the zoom-in spectra of m/z region ranged from 350 to 500. The red dashed line signifies the special spectral gap pointing the double bond position. The symbols represent as same as those in Figure 2.