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. 2019 Dec 24;10(1):13. doi: 10.3390/metabo10010013

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© 2019 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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Relative mobilities of several flavonoid isomer classes selected from Figure S1 and general ring structures for flavones (top) and flavanones (bottom) with rings and functional positions labeled. The m/z is indicated on the x-axis and the CCS on the y-axis. The n value represents the number of isomers in each group. Many of the isomers have different CCS and could be differentiated. Isomers with the same CCS would need to elute at different times from the UHPLC to be differentiated. General ring structures for flavones and flavanones.