It is employed as a highly reactive spin-label.
Bruce R. Knauer, et al. The nitrogen hyperfine splitting constant of the nitroxide functional group as a solvent polarity parameter. The relative importance for a solvent polarity parameter of its being a cybotactic probe vs. its being a model process.J. Am. Chem. Soc.,1976,98(15), 4395-4400.
S. Cavalu, et al. Rotational Correlation Times of 3-Carbamoyl-2,2,5,5-tetramethyl-3-pyrrolin-1-yloxy Spin Label with Respect to Heme and Nonheme Proteins.Biomacromolecules.,2003,4(6), 1630-1635.
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