Process for preparation of mixtures of polypeptides using purified hydrobromic acid

Process for preparation of mixtures of polypeptides using purified hydrobromic acid

  • CN 101,166,754 B
  • Filed: 09/09/2005
  • Issued: 04/23/2014
  • Est. Priority Date: 09/09/2004
  • Status: Active Grant
First Claim
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1. obtaining is not the method all with the mixture of the trifluoroacetyl group polypeptide of same acid sequence;

  • wherein every peptide species is by L-Ala;

    L-glutamic acid;

    tyrosine and trifluoroacetyl group Methionin composition;

    wherein said mixture have need molecular-weight average and wherein in described method;

    every kind by L-Ala;

    γ

    -benzyl L-glutamic acid;

    the mixture of the polypeptide of tyrosine and trifluoroacetyl group Methionin composition batch go protection with hydrobromic acetic acid solution;

    its improvement comprises uses hydrobromic acetic acid solution, and described solution comprises the free bromine that is less than 0.5%.

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