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. 2020 Jan 23;25(3):482. doi: 10.3390/molecules25030482

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© 2020 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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Scheme 4 — A. Radiolabelling of [¹¹C]SCH-23390, starting from the desmethyl precursor 7, described by Halldin and colleagues [35]; B. Method from DeJesus and colleagues [34].