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. 2021 Jan 6;26(2):255. doi: 10.3390/molecules26020255

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© 2021 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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(A) HPLC profiles of sub-fraction (CC12) separated by column chromatography. Use of preparative HPLC to yield (B) single compound 1 protocatechuic acid and (C) compound 2 isookanin.