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. 2019 Jun 14;60(8):1410–1424. doi: 10.1194/jlr.RA119000157

Fig. 5.

Fig. 5.

Confirmation of the structure of lysoSM-509. A: Chromatograms (detected by product ion scan) and high resolution product ion spectra of the [M+H]+ ions of endogenous lysoSM-509 and synthetic PPCS. B: Chromatograms (detected by product ion scan) and high-resolution product ion spectra of the [M-H]− ions of endogenous lysoSM-509 and synthetic PPCS. C: Chromatograms (detected by product ion scan) and product ion spectra of the [M+H]+ ions of endogenous lysoSM-509 methyl ester and synthetic PPCS methyl ester. D: Decomposition products 1 and 2 from synthetic PPCS and endogenous lysoSM-509. Decomposition product 1 was detected in seven MRM transitions. Decomposition product 2 was detected in three MRM transitions.