Preparation and use of mixed mode solid substrates for...

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B01J 20/32 (2006.01) C07K 1/22 (2006.01) G01N 1/00 (2006.01) G01N 33/543 (2006.01) G01N 33/545 (2006.01) H01J 49/16 (2006.01) B01D 15/18 (2006.01) G01N 1/04 (2006.01) G01N 35/00 (2006.01)

Patent

CA 2500903

For certain mixed mode resins having anionic character, a ligand is joined to a solid support via a linkage that includes a mercapto-, ether- or amino- containing moiety. A suitable ligand comprises an aromatic group, a heteroaromatic group, or a heterocyclic group, optionally fused, that is sulfate-, sulfonate-, phosphonate- or phosphate-substituted and that is linked to such a moiety. These resins possess an anionic character under conditions prescribed for their use. Separation of a biological substance, such as a peptide or protein, can be accomplished with a resin of this type via a change in the pH of eluants, thereby effecting adsorption and desorption.

Pour certaines résines en mode mixte présentant un caractère anionique, un ligand est ajouté à un support solide via une liaison qui comprend un groupe fonctionnel mercapto, étherique ou aminé. Un ligand approprié contient un groupe aromatique, un groupe hétéroaromatique ou un groupe hétérocyclique éventuellement fusionné, à substitution par sulfate, sulfonate, phosphonate ou phosphate, qui est lié à un tel groupe fonctionnel. Ces résines possèdent un caractère anionique dans les conditions indiquées pour leur utilisation. La séparation d'une substance biologique telle qu'un peptide ou une protéine peut être effectuée au moyen d'une résine de ce type avec un changement du pH des éluants, qui effectuent ainsi l'adsorption et la désorption.

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