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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Anal Bioanal Chem. 2015 Feb 6;407(9):2519–2528. doi: 10.1007/s00216-015-8480-1

Fig. 1.

Fig. 1

The MS2 spectra of the [M – H]− ions of 17:0/15:0-PG at m/z 721.5 (a), of 15:0/15:0-PG at m/z 693.4 (b), of p17:0/15:0-PG at m/z 705.6 (c), and its MS3 spectrum of the ion of m/z 481 (705 → 481) (d).