F9557 Sigma-Aldrich


Synonym: FSL-B(GALa3[Fa2]GALb)-SA1-L1

  • Empirical Formula (Hill Notation) C68H122N2NaO25P

  • Molecular Weight 1421.66

  •  NACRES NA.25



Related Categories Cell Surface Modification, Glycobiology, Molecular Biology, Post-Translational Modification, Proteomics More...
Quality Level   200
assay   ≥95% (TLC)
form   solid
storage temp.   −20°C



FSL Constructs Video Protocol

All FSL constructs disperse in biocompatible media and spontaneously and stably incorporate into cell membranes. Cells modified with KODE constructs are known as kodecytes and usually maintain their normal vitality and functionality.

FSL-B(tri) has been specifically designed to create live cells (kodecytes) expressing blood group B antigens but can also be used to modify other hydrophobic surfaces including fixed cells, virions, and solid phase surfaces. This product can be used to attach reproducible and controlled levels of blood group B antigens (generic B due to its trisaccharide structure) to group O or A erythrocytes. These kodecytes will react with most anti-B blood grouping reagents including polyclonal reagents.

FSL-B(tri) has been used to modify cell or virion surfaces with markers.

Other Notes

FSL-B(tri) is a KODE technology construct designed to label hydrophobic surfaces including living cells with blood group B trisaccharide. All KODE FSL constructs consist of three essential designable features: a functional component (F), a spacer (S), and a diacyl lipid (L). FSL-B(tri) is comprised of the blood group B trisaccharide Galα3(Fucα2)Galβ representing F, conjugated via an O(CH2)3NH spacer (SA1) to an activated adipate derivative of dioleoyl­phos­pha­tidyl­ethanol­amine (L1).

Legal Information

KODE Constructs are supplied by KODE Biotech Materials Limited under license from KODE Biotech Limited.

KODE is a trademark of KODE Biotech Ltd.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


FSL Construct Protocol

The following protocol describes the generic procedure for the insertion of FSL constructs (Figure 1) into biological membranes. For simplicity the protocol will only refer to cells (kodecytes), whic...
Adapted from Blake, D.A., et al. FSL Constructs: A simple method for Modifying Cell/Virion Surfaces with a Range of Biological Markers Without Affecting their Viability. J. Vis. Exp. (54), e3289, doi:10.3791/3289 (2011).
Keywords: Cell culture, Cell preservation, Centrifugation, Culture media, Detergents, Flow cytometry, Microscopy, Solvents

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