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. Author manuscript; available in PMC: 2020 Jan 10.
Published in final edited form as: Methods Enzymol. 2018 Dec 7;615:407–422. doi: 10.1016/bs.mie.2018.09.003

Figure 5.

Figure 5.

Final verification of a top ranked candidate compound by 2D 13C-1H HSQC NMR experiments by comparison of the spectrum of the pure compound (red peaks) with the peaks of the unknown compound in the complex metabolite mixture (gray peaks). The good chemical shift agreement confirms the identity of the unknown mixture compound.