MTSL

MTSL
Names
	Preferred IUPAC name {2,2,5,5-Tetramethyl-3-[(2-methyl-2,2-dioxo-2λ6-disulfan-1-yl)methyl]-2,5-dihydro-1H-pyrrol-1-yl}oxyl
	Other names MTSL
Identifiers
CAS Number	81213-52-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	117873 ;
PubChem CID	133628;
CompTox Dashboard (EPA)	DTXSID80230944 ;
	InChI InChI=1S/C10H18NO3S2/c1-9(2)6-8(7-15-16(5,13)14)10(3,4)11(9)12/h6H,7H2,1-5H3 Key: BLSCGBLQCTWVPO-UHFFFAOYSA-N ; InChI=1/C10H18NO3S2/c1-9(2)6-8(7-15-16(5,13)14)10(3,4)11(9)12/h6H,7H2,1-5H3 Key: BLSCGBLQCTWVPO-UHFFFAOYAW;
	SMILES CC1(C=C(C(N1[O])(C)C)CSS(=O)(=O)C)C;
Properties
Chemical formula	C10H18NO3S2
Molar mass	264.38 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

MTSL (S-(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)methyl methanesulfonothioate) is an organosulfur compound that is used as a nitroxide spin label.^[1] MTSL is bifunctional, consisting of the nitroxide and the thiosulfonate ester functional groups. The nitroxide label is sterically protected, so it is relatively unreactive.

^ Christian Altenbach, Kyoung-Joon Oh, René J. Trabanino, Kálmán Hideg, Wayne L. Hubbell "Estimation of Inter-Residue Distances in Spin Labeled Proteins at Physiological Temperatures: Experimental Strategies and Practical Limitations" Biochemistry, 2001, volume 40, pp 15471–15482. doi:10.1021/bi011544w

[Altenbach-1] Christian Altenbach, Kyoung-Joon Oh, René J. Trabanino, Kálmán Hideg, Wayne L. Hubbell "Estimation of Inter-Residue Distances in Spin Labeled Proteins at Physiological Temperatures: Experimental Strategies and Practical Limitations" Biochemistry, 2001, volume 40, pp 15471–15482. doi:10.1021/bi011544w

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