METHOD FOR PURIFYING SOMATOTROPIN MONOMERS

摘要

There is provided a method for purifying a refold somatotropin monomer from a mixture of somatotropin monomers and somatotropin oligomers in an aqueous solution having a urea concentration of greater than 3 molar by the addition of an acid to reduce the pH of the solution to below about 7.7 to selectively precipitate the oligomers in the most part.