COOH

Magnetic silica particles (sicastar®-M) with a diameter of 1.5 µm are available with carboxylic acid groups on the surface for the covalent binding of proteins, antibodies or other molecules.
The particles are stable in aqueous and in organic media and allow the binding of water-soluble molecules as well as of molecules, that are only soluble in organic solvents. The functionalized particles are supplied in water.

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References
  • Weber, E., Günther, D., Zellmer, S., Goldberg, M., Bergmann, C., Herrmann, C., Huske, A., and Müller, A., Immunomagnetic separation of specific target cells, 2005, US Patent 20050003559, 1-9;