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. Author manuscript; available in PMC: 2013 May 21.
Published in final edited form as: Chem Res Toxicol. 2012 May 4;25(5):1119–1131. doi: 10.1021/tx3000889

Figure 2.

Figure 2

Product ion spectra of AL-DNA adducts acquired at the MS3 scan stage, representing the fragmentation of the aglycone adducts [BH2]+ of dG-AL-II (m/z 413), dG-AL-I (m/z 443), dA-AL-II (m/z 397), and dA-AL-I (m/z 427). Based upon the comparison of the product ion spectra of the dA-AL-II and [15N3]-dA-AL-II adducts (Supporting Information, Figure S5), the fragment ion at m/z 324.2 (m/z 327.2 for [15N3]-dA-AL-II) may form by the loss of CH2O and HNCO from the substituted phenanthrene ring.