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. 2019 May 10;47(11):5511–5521. doi: 10.1093/nar/gkz352

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© The Author(s) 2019. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 4. — Synthetic pathway to (A) Fmoc(Q^Pho) and (B) Fmoc(^mQ^Pho) monomers. Crystal structure of Fmoc(^mQ^Pho) monomer (C) crystallized from dichloromethane/ether. Included solvent molecules have been removed for clarity. DIAD = diisopropyl azodicarboxylate; Fmoc = fluorenylmethyloxycarbonyl.