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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Anal Biochem. 2013 Jul 11;442(1):10.1016/j.ab.2013.06.014. doi: 10.1016/j.ab.2013.06.014

Figure 2. Full mass product ion scans used to discriminate 16- and 17-HDoHE derivatized with N-(4-aminomethylphenyl)-pyridinium (AMPP).

Figure 2

(A) Mass spectrum of the CID of 16-DHoHE-AMPP exhibiting a prominent diagnostic fragment ion at m/z 401 which was utilized for the SRM transition based identification and quantitation of 16-DHoHE. (B) Mass spectrum of the CID of 17-DHoHE-AMPP displaying an informative fragment ion at m/z 441 which was utilized for the SRM transition based identification and quantitation of 17-DHoHE.