STABILIZED THYMOSIN FRACTION 5

RAN 4090/93 A solid stable endotoxin and pyrogen free form of thymosin fraction 5 preparation containing (a) a major amount of thymosin fraction and minor, effective amounts each of (b) a phenolic type antimicrobial agent, and (c) a buffering agent in an amount sufficient to provide a pH of 7-8 on r...

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Hauptverfasser: ARMIN HERMANN RAMEL, WELDON COURTNEY MCGREGOR, HAROLD LEON NEWMARK
Format: Patent
Sprache:eng
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Zusammenfassung:RAN 4090/93 A solid stable endotoxin and pyrogen free form of thymosin fraction 5 preparation containing (a) a major amount of thymosin fraction and minor, effective amounts each of (b) a phenolic type antimicrobial agent, and (c) a buffering agent in an amount sufficient to provide a pH of 7-8 on reconstitution and method for preparing same which method comprises (a) ultrafiltering an aqueous solution of thymosin fraction 5 buffered with a volatile weakly basic buffer to a pH of 7 to 8 through a membrane having a molecular weight cut off of about 10,000, (b) adding a phenolic type antimicrobial agent to the permeate and a buffering agent in anmount sufficient to provide of pH of 7-8 on reconstitution and (c) lyophilizing the permeate.