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. 2020 Oct 8;12(10):3067. doi: 10.3390/nu12103067

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Liquid chromatography/electrospray ionization tandem mass spectrometry (LC-MS/MS) chromatograms of CN-B₁₂. (A) Retention time for CN-B₁₂ standard (arrow). (B) Retention time for CN-B₁₂ extracted from Mankai sample (arrow). ES, electrospray; MRM, multiple reaction monitoring; TIC, total ion current.