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

Fig. 2.

Fig. 2.

Identification of the structure of lysoSM-509. A: High-resolution mass spectrum of endogenous lysoSM-509 in positive ion mode. B: High-resolution mass spectrum of endogenous lysoSM-509 in negative ion mode. C: High-resolution product ion spectrum of the [M+H]+ ion of endogenous lysoSM-509. D: High-resolution product ion spectrum of the [M+Na]+ ion of endogenous lysoSM-509. E: High-resolution product ion spectrum of the [M+2Na-H]+ ion of endogenous lysoSM-509. F: High-resolution product ion spectrum of the [M-H]− ion of endogenous lysoSM-509. G: H/D exchange of endogenous lysoSM-509 detected with MRM. The [M-2H+3D]+ ion at m/z 512 shows the maximum intensity. H: Product ion spectrum of the [M+H]+ ion of endogenous lysoSM-509 methyl ester.