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. 2023 Apr 16;28(8):3513. doi: 10.3390/molecules28083513

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© 2023 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 (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Proposed chemical structures for (a) LSA-Sc³⁺ and (b) LSA-Cu²⁺ catalysts. Adapted with permission from reference [33]. Copyright 2014 Atlanta Publishing House LLC.