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. 2019 Jul 9;11(7):321. doi: 10.3390/pharmaceutics11070321

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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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Structures of ethylenediamine-N,N,N’,N’-tetraacetic acid (EDTA) (a), ethylene glycol-bis(beta-aminoethyl)-N,N,N’,N’-tetraacetic acid (EGTA) (b), 1,2-bis(o-aminophenoxy)ethane-N,N,N’,N’-tetraacetic acid (BAPTA) (c), and ethylenediamine-N,N’-disuccinic acid (EDDS) (d).

Structures of ethylenediamine-N,N,N’,N’-tetraacetic acid (EDTA) (a), ethylene glycol-bis(beta-aminoethyl)-N,N,N’,N’-tetraacetic acid (EGTA) (b), 1,2-bis(o-aminophenoxy)ethane-N,N,N’,N’-tetraacetic acid (BAPTA) (c), and ethylenediamine-N,N’-disuccinic acid (EDDS) (d).