Product Description: 1-Oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylate NHS ester (OXYL-1-NHS) is an active acylating agent that can be used to spin label proteins and aminoacylated RNA species[1][2].
Formula: C13H17N2O5?
References: [1]Cavalu S, et al. EPR study of non-covalent spin labeled serum albumin and hemoglobin. Biophys Chem. 2002 Oct 16;99(2):181-8.