FIGURE 1 Gas chromatograhic separation of organic acids from mouse urine prior to 1,4-BD administration (A.) and after 1,4-BD administration (B.). Note the prominent chromatogram peak that appears at 9.49 min after administration of 1,4-BD (B.). Amplification of chromatogram peak at 9.49 min (C.) and its mass spectrum analysis (D.), which had a library match for 4-hydroxybutyric acid/GHB in the organic acid library that was searched.
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