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D3818

Sigma-Aldrich

Dextran Ladder

Glycan standard for HPLC

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biological source

bacterial (Leuconostoc mesenteroides)

form

solid

shipped in

wet ice

storage temp.

−20°C

Application

The dextran ladder is used as an external standard for the analysis of glycans by normal phase HPLC after fluorescent labeling. This standard gives a characteristic ladder profile from monomeric glucose to approximately a 20-mers of glucose oligosaccharide, dependent upon the chromatographic conditions employed. The elution position of each peak in this ladder is expressed as a glucose unit (gu) and is used to assign gu values to peaks in the released glycan pool.Dextran ladder upon derivitization can be used as a new tool to assess cell layer tightness.

Preparation Note

The dextran ladder is prepared by partial acid hydrolysis of dextran from Leuconostoc mesenteroides with an average molecular weight of 100-200 kDa. The purity and structural integrity of the ladder is assessed by fluorescently labeling an aliquot and subsequent analysis by normal phase HPLC.

related product

Product No.
Description
Pricing

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Sigma-Aldrich

Sigma-Aldrich

D9260

Dextran from Leuconostoc mesenteroides

Winfried Neuhaus et al.
Journal of pharmaceutical and biomedical analysis, 40(4), 1035-1039 (2005-10-26)
The aim of this work was the development of an easy manageable analytic system for describing tightness of cell layers in a molecular size dependent manner, which is more precise than currently used ones. Dextrans were labeled by reductive amination
J Charlwood et al.
Analytical biochemistry, 273(2), 261-277 (1999-09-02)
Reverse- and normal-phase chromatography have been used to separate a number of standard human milk oligosaccharides derivatized via a reductive amination reaction with 2-aminoacridone (2-AMAC). Analytes were detected by spectrofluorimetry and injected simultaneously with a hydrolyzed dextran ladder derivatized with
A novel tool to characterize paracellular transport: the APTS-dextran ladder.
Neuhaus W, Bogner E, Wirth M, et al.
Pharmaceut. Res., 23, 1491-1501 (2006)

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