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. Author manuscript; available in PMC: 2017 Nov 14.
Published in final edited form as: Metabolomics. 2017 Oct 3;13(11):132. doi: 10.1007/s11306-017-1277-9

Table 2.

Oxygen-18 Labeled Isotope peaks for stercobilin detected with the percent labeled as compared to all peak areas.

m/z Peak (18On) % Labelling
595 (18O0) 6 ± 2
597 (18O1) 13 ± 4
599 (18O2) 26 ± 7
601 (18O3) 27 ± 14
603 (18O4) 28 ± 1