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18:0 SM (d18:1/18:0) | 860586

N-stearoyl-D-erythro-sphingosylphosphorylcholine

860586P

Powder

5 mg
$352.00
10 mg
$630.00
25 mg
$1386.00
50 mg
$2226.00

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As a major constituent of cell membranes, sphingomyelin is found at particularly high concentrations in the membranes of nerve cells (in the myelin sheaths) and red blood cells. It was previously thought to have a purely structural role, similar to the function of phosphatidylcholine, through intermolecular interactions mediated by the 2-amide group, the 3-hydroxy group and the 4,5-trans double bond of the sphingoid base1. However, it is now appreciated that sphingomyelin has a high affinity for cholesterol and that these two lipids pack tightly into liquid-ordered domains among a liquid-disordered phase to form lipid rafts1,2. These membrane microdomains are thought to function as signaling platforms that regulate the localization and interactions of proteins. But sphingomyelin does not just influence signaling as a component of lipid rafts — it is also a precursor to ceramides and other sphingolipid metabolites that comprise the sphingomyelin cycle or sphingolipid network1,2.
 
1. Christie, W.W. Sphingomyelin and related lipids. The AOCS Lipid Library.
2. Milhas, D., Clarke, C.J. & Hannun, Y.A. Sphingomyelin metabolism at the plasma membrane: implications for bioactive sphingolipids. FEBS Lett. 584, 1887-1894 (2010). [PubMed]
Molecular Formula
C41H83N2O6P
Percent Composition
C 67.36%, H 11.44%, N 3.83%, O 13.13%, P 4.24%
Purity
>99%
Stability
1 Years
Storage
-20°C
CAS Number
58909-84-5
CAS Registry Number is a Registered Trademark of the American Chemical Society
Molecular Weight
731.081
Exact Mass
730.599
Transition Temp
45°C
Synonyms
Octadecanoyl Sphingomyelin
N-(octadecanoyl)-sphing-4-enine-1-phosphocholine
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Notes
GIF Graphics File. 
GIF Graphics File. 
MDL Molfile. 
CDX File. 
Multi-Level Characterization of the Membrane Properties of Resveratrol-Incorporated Liposomes Jin Han, Keishi Suga, Keita Hayashi, Yukihiro Okamoto, and Hiroshi Umakoshi J. Phys. Chem. B, Article ASAP [PubMed]