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Monomeric insulin analog formulations

  • US 5,650,486 A
  • Filed: 06/01/1995
  • Issued: 07/22/1997
  • Est. Priority Date: 06/16/1994
  • Status: Expired due to Term
First Claim
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1. A process for preparing an insulin analog-protamine crystal, which comprises:

  • combining an aqueous solution of human insulin wherein Pro at position B28 is substituted with Asp, and Lys at position B29 is substituted with Lys or Pro in a hexamer association state, and a protamine solution at a temperature from about 5°

    C. to about 22°

    C.;

    said aqueous solution comprising from about 0.35 to about 0.9% zinc by weight, human insulin wherein Pro at position B28 is substituted with Asp, and Lys at position B29 is substituted with Lys or Pro, and a phenolic derivative at a pH of about 7.1 to about 7.6;

    said protamine solution comprising protamine at a pH of about 7.1 to about 7.6 such that the final concentration of protamine is about 0.27 to about 0.35 mg protamine to 100 IU of insulin analog.

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