POLYETHYLENE GLYCOL-G-CSF CONJUGATE

摘要

The present invention relates to three-branched PEG-G-CSF conjugate of general formula (1 ) in which the bonding ratio of three-branched polyethylene glycol(PEG) and G-CSF is 1 : 1 (mol/mol), wherein PEG has an average molecular weight of from 200 to 45.000 daltons; a pharmaceutical composition comprising the same, and a preparing method thereof.