. 2014 Oct 23;19(10):16998–17025. doi: 10.3390/molecules191016998
© 2014 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 license (http://creativecommons.org/licenses/by/4.0/).
Scheme 3.
Spin labelling of phosphate backbone of RNA.