Carboxymethyl-dextran

CAS Number: 39422-83-8

CM-dextran consists of a dextran backbone substituted with carboxymethyl substituents imparting a polyanionic character to the product. All batches are checked for molecular weight, degree of substitution and loss on drying. TdB Labs produce CM-dextrans from 4 kDa to 150 kDa. CM-dextran is supplied as a white powder.

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Structure
CM-dextran is manufactured by reacting selected dextran fractions with an activated carboxymethyl derivative in alkali. This leads to the introduction of O-carboxymethyl groups along the dextran chain. The carboxyl content is approximately 5% which is equivalent to about one CM group for every 5 five glucose units. Higher degrees of substitution may be achieved if required.

Storage and stability
CM-dextran is stable for more than 6 years when stored dry in well-sealed containers at ambient temperature.

Solubility
CM-dextran dissolves readily in water.

Application
CM-dextran can be used as stabilisers for sensitive biopolymers, as non-toxic ingredients in formulations, as reagents for binding cations (inorganic and organic) via carboxyl reactions and more. Read more about application here.

References

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How to order

Visit our webshop to see the molecular weights and pack sizes available. Please send an e-mail to order@tdblabs.se if you would like to receive a quote, place a bulk order or if you wish to place your order manually.