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. 2015 Sep 17;5:62. doi: 10.1186/s13568-015-0149-9

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© Stagge et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Chromatogram from MRM transitions of DNPH-hydrazones of a DMBQ (figure showing one of two possible 2,4-dinitrophenylhydrazone structural isomers that could give rise to the double peak) (m/z 346.8 → 166.8) and b BQ (m/z 286.9 → 166.8) in PL6 (aspen)