Chromatography adsorbents utilizing mercapto heterocyclic ligands
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United States of America Patent
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Aug 26, 2003
Grant Date -
Aug 16, 2001
app pub date -
Feb 13, 1998
filing date -
May 16, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pseudobioaffinity chromatography adsorbent adapted for use in selectively adsorbing immunoglobulins. In one embodiment, the adsorbent includes: (a) a solid support material; and (b) a ligand immobilized on the surface of the solid support material, said ligand being a compound of the formula ##STR1## wherein Y.sub.1 is selected from the group consisting of S, SCH.sub.3.sup.+, O, NH, NCH.sub.3, CH.sub.2 and CR.sub.1 R.sub.2 wherein at least one of R.sub.1 and R.sub.2 is not hydrogen; wherein each of Y.sub.2, Y.sub.3 and Y.sub.4 is selected from the group consisting of N, NCH.sub.3.sup.+, CH, and CR wherein R is not hydrogen; and wherein at least two of Y.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 are neither CH.sub.2, CH, CR nor CR.sub.1 R.sub.2.
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