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. 2019 Jan 24;10:10. doi: 10.3389/fphar.2019.00010

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Copyright © 2019 Yang, Wang, Peng, Ding and Zhou.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Synthesis and characterization of PEG-BHyd-dC₁₂ (A,C) and PEG-BAmi-dC₁₂ (B,D)_. The synthesis of PEG-BHyd-dC₁₂ (A) and PEG-BAmi-dC₁₂ (B), H1-NMR spectrum of PEG-BHyd-dC₁₂ (C), and PEG-BAmi-dC₁₂ (D).