Josef Burg,Klaus Reichert,Axel Schroth,Hartmut Schurig,Axel Wessner
申请号：
US12931070
公开号：
US08889837B2
申请日:
2011.01.24
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The invention is a method for the purification of mono-PEGylated erythropoietin using two cation exchange chromatography steps wherein the same type of cation exchange material is used in both cation exchange chromatography steps and a method for producing a mono-PEGylated erythropoietin in substantially homogeneous form.
