. 2020 Nov 4;25(21):5123. doi: 10.3390/molecules25215123
© 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/).
Figure 3.
UV spectra of PR, PEG4k-PR, and PEG5k-PR.