Dextran sulfate 5 is a low molecular weight dextran derivative produced by sulfation of selected dextran fractions. TdB Labs produce both low sulfated and hight sulfated dextran sulfate 5, where 5 represents a molecular weigh of 5000 Da. The full name is Dextran sulfate (sulphate) sodium salt 5kDa.
Dextran sulfate 5 from TdB Labs is made by a novel and unique know-how procedure, which gives a white powder with low absorbance and excellent stability. The product does not contain pyridine.
Dextran sulfate 5 is supplied as the sodium salt and is stabilised by a small addition of phosphate salts. The molecular weight refers to values obtained after sulfation. A certificate of analysis is supplied with each batch. The molecular weight range, sulfur content, moisture etc. are carefully controlled.
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Structure Dextran is a polysaccharide derived from the bacterium Leuconostoc mesenteroides B512F and consists of an α-D-(1 – 6) linear glucan with a low content (ca. 5%) of sidechains linked to the 3-carbon of glucose. Dextran sulfate 5 is a sulfated derivative of selected dextran fraction. The sulfate content of our low sulfated dextran sulfate 5 lies between 8 to 13 %, the degree of sulfatation of our high sulfated dextran sulfate 5 is between 16 to 20 %.
Storage and Storage and stability
Dextran sulfate 5 is stable for more than 6 years when stored dry in well-sealed containers at ambient temperature
Dextran sulfate 5 is readily soluble in water.
Dextran sulfate 5 or low molecular weight dextran sulfate sodium salt has a wide range of applications areas and properties.
Dextran sulfate 5 is a common additive in cell culture media where it is often used as an anti-coagulant. Aggregations of cells affects cell growth, nutrient transports, proliferation and obstructs cell counting and monitoring. Dextran sulfate 5 in combination with trypsin has been shown to diminish cell-aggregation during culture of Chinese hamster ovary (CHO) cells (Jing et al, 2016). Dextran sulfate has also shown to inhibit apoptosis and increase protein production in CHO cells (Menvielle et al, 2013).
Used in cosmetics for anti-inflammation properties and osmotic retention of water
Separation of microorganisms and macromolecules
Adjuvant in vaccines
Studies of perm selectivity of membranes
molecular weight (Mw)
molecular weight (Mn)
Loss on drying
Total aerobic microbial count
Total combined yeasts/mould count (TYMC)
Bacterial endotoxins (BET)
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Dijk, M. et al. How Dextran Sulfate Affects C1-inhibitor Activity: A Model for Polysaccharide Potentiation. Structure24, 2182–2189 (2016).
Shahraz, A. et al. Anti-inflammatory activity of low molecular weight polysialic acid on human macrophages. Scientific Reports5, 16800 (2015).
Svensjö, E., Nogueira de Almeida, L., Vellasco, L., Juliano, L. & Scharfstein, J. Ecotin-Like ISP of L. major Promastigotes Fine-Tunes Macrophage Phagocytosis by Limiting the Pericellular Release of Bradykinin from Surface-Bound Kininogens: A Survival Strategy Based on the Silencing of Proinflammatory G-Protein Coupled Kinin B2 and B1 Receptors. Mediators of Inflammation https://www.hindawi.com/journals/mi/2014/143450/abs/ (2014) doi:10.1155/2014/143450.
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Svensjö, E. et al. Maxadilan, the Lutzomyia longipalpis vasodilator, drives plasma leakage via PAC1–CXCR1/2-pathway. Microvascular Research83, 185–193 (2012).
Russo, L. M. et al. Renal Processing of Albumin in Diabetes and Hypertension in Rats. AJN23, 61–70 (2003).
Landauer, K. et al. Influence of Carboxymethyl Dextran and Ferric Citrate on the Adhesion of CHO Cells on Microcarriers. Biotechnology Progress19, 21–29 (2003).
Hugerth, A. M. Micropolarity and Microviscosity of Amitriptyline and Dextran Sulfate/Carrageenan‐Amitriptyline Systems: The Nature of Polyelectrolyte–Drug Complexes. Journal of Pharmaceutical Sciences90, 1665–1677 (2001).
Persson, B., Hugerth, A., Caram-Lelham, N. & Sundelöf, L.-O. Dextran Sulfate−Amphiphile Interaction; Effect of Polyelectrolyte Charge Density and Amphiphile Hydrophobicity. Langmuir16, 313–317 (2000).
Hugerth, A. & Sundelöf, L.-O. Effect of Polyelectrolyte Counterion Specificity on Dextran Sulfate−Amphiphile Interaction in Water and Aqueous/Organic Solvent Mixtures. Langmuir16, 4940–4945 (2000).
Burne, M. J. et al. Anomalous decrease in dextran sulfate clearance in the diabetic rat kidney. American Journal of Physiology-Renal Physiology274, F700–F708 (1998).
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Vyas, S. V., Parker, J.-A. & Comper, W. D. Uptake of dextran sulphate by glomerular intracellular vesicles during kidney ultrafiltration. Kidney International47, 945–950 (1995).