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. 2010 Nov 19;77(2):572–579. doi: 10.1128/AEM.00393-10

FIG. 4.

FIG. 4.

ESI-MS and ESI-MS/MS spectra of 4-fluorocinnamoyl-CoA and acetyl-CoA. (a) Spectrum of 4-fluorocinnamoyl-CoA singly charged quasi-molecular ion [M + H]+ at m/z 916.15. Fragmentation of 4-fluorocinnamoyl-CoA is shown as an inset. (b) Spectrum of 4-fluorophenyl-β-hydroxy propionyl-CoA singly charged quasi-molecular ion [M + H]+ at m/z 934.02. Fragmentation of 4-fluorophenyl-β-hydroxy propionyl-CoA is shown in the inset. (c) Spectrum of 4-fluorophenyl-β-keto propionyl-CoA with singly charged quasi-molecular ion [M + H]+ at m/z 932.02. Fragmentation of protonated 4-fluorophenyl-β-keto propionyl-CoA is shown in the inset. (d) Detection of acetyl-CoA in positive-mode ESI-MS with singly charged quasi-molecular ion [M + H]+ at m/z 810.08. Fragmentation of protonated acetyl-CoA is shown in the inset.