ST. LOUIS, Missouri, October 24 /PRNewswire-FirstCall/ -- SAFC, a member of the Sigma-Aldrich Group (NASDAQ:SIAL - News), announced today that its SAFC Pharma business segment has been appointed by Curalogic A/S, a Danish biotechnology company, to provide protein isolation, extraction and purification services in connection with the development of products focused on Allergic Rhinitis.