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. Author manuscript; available in PMC: 2019 Aug 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2018 May 31;29(8):1688–1699. doi: 10.1007/s13361-018-1993-z

Figure 3.

Figure 3

The MALDI LIFT TOF-TOF spectrum of the M+ ions of (a) cPro(9)19:0-AMPP at m/z 463, (b) 14-methyl-hexadecanoic acid-AMPP (anteiso) and (c) 15-methyl-hexadecanoic acid-AMPP (iso) at m/z 437; and of 3,7,11,15tetramethyl hexadecanoic acid-AMPP (phytanic acid) at m/z 479. These TOF-TOF spectra easily locate the methyl side chain(s) along the long fatty acid chains.