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. 2023 May 22;63:102758. doi: 10.1016/j.redox.2023.102758

Fig. 1.

Fig. 1

Generation of SAPE-truncated species in an iron/H2O2/SAPE model system. SAPE was incubated with iron ammonium sulfate and H2O2 and allowed to react for 4 h at room temperature as described in Materials and Methods. SAPE and its truncated products were assessed by C30-ESI-MS/MS analysis. 1A, TIC C30 chromatogram displaying the truncated SAPE region. 1B, m/z 540–700 expanded range indicating the numerous truncated species. 1C, MS/MS analysis of a C5 truncated species (m/z 578.3466). 1D, MS/MS analysis of a C8 truncated species (m/z 634.3736).