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253537 Sigma-Aldrich

3β-DOXYL-5α-cholestane, free radical

Synonym: 4′,4′-Dimethylspiro(5α-cholestane-3,2′-oxazolidin)-3′-yloxy, free radical

  • CAS Number 55569-61-4

  • Empirical Formula (Hill Notation) C31H55NO2

  • Molecular Weight 473.77

  •  MDL number MFCD00074781

  •  PubChem Substance ID 24855313

  •  NACRES NA.22

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Properties

Related Categories Chemical Synthesis, Doxyl Derivatives, Radical Chemistry, Stable Radicals, Synthetic Reagents More...
mp   176-178 °C (lit.)
storage temp.   2-8°C
SMILES string   CC(C)CCC[C@@H](C)[C@H]1CC[C@H]2[C@@H]3CC[C@H]4CC5(CC[C@]4(C)[C@H]3CC[C@]12C)OCC(C)(C)N5[O]
InChI   1S/C31H54NO2/c1-21(2)9-8-10-22(3)25-13-14-26-24-12-11-23-19-31(32(33)28(4,5)20-34-31)18-17-29(23,6)27(24)15-16-30(25,26)7/h21-27H,8-20H2,1-7H3/t22-,23+,24+,25-,26+,27+,29+,30-,31?/m1/s1
InChI key   ODDFHESUNMAHDN-LJGTUOGHSA-N

Description

Application

Free radical spin label used for EPR studies.
• Studying transversal relaxation of nitroxides for PELDOR in phospholipid membranes
• Comparative studies of effect of cholesterol on bicelle model membranes
• Spin probe for studying electron spin-lattice relaxation times in aqueous dispersions via saturation recovery
• Probing cooperative and local modes of poly(Me acrylate) sample using ESR
• Studying random disorder effects of hydrophyobic aerosil on order and dynamics of the probe in 5CB nematic liquid crystals

Packaging

10 mg in clear glass bottle

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles
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