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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/).
Chemical structures of the quinone-chelators doxorubicin (adriamicin, Dox), daunomycin (daunorubicin) and emodin.The metal binding sites of anthraquinones involves an oxygen molecule (=O) of one of the rings and an hydroxyl (−OH) group from an adjacent ring.