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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 2.

Figure 2

The MALDI LIFT TOF-TOF spectra of the M+ ions of m/z 473 from Δ8,11,1420:3-AMPP (a), Δ11,14,1720:3-AMPP isomers (b), and of m/z 635 ions from Δ14,17,20,23,26,2932:6-AMPP (c). Panel d and Panel e show the MS2 spectra of Δ8,11,1420:3-AMPP obtained by a LIT instrument applying low energy CID (optimized to 65% normalized CE) (c), and HCD (optimized to 50% normalized CE) (d). Panel f shows the low energy CID (60% normalized CE) LIT MS2 spectrum of Δ14,17,20,23,26,2932:6-AMPP, and the spectrum is similar to that acquired by LIFT TOF-TOF (Panel c).