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. 2019 May 8;10:464. doi: 10.3389/fphar.2019.00464

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Copyright © 2019 Wan, Yang, McReynolds, Barnych, Wagner, Morisseau, Hwang, Sun, Blöcher and Hammock.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Tandem mass spectrometric analysis of TPPU metabolites eluted in Figure 3. (A) MS/MS analysis of ion (m/z 374) eluted at 4.1 min. (B) MS/MS analysis of ion (m/z 374) eluted at 3.98 min. (C) MS/MS analysis of ion (m/z 302) eluted at 3.28 min. (D) MS/MS analysis of ion (m/z 388) eluted at 4.02 min.