Description  Claims  Drawing  Cited references 

US5932462A   [0007]  [0014]  [0017] 
EP1479711A   [0009] 
WO2005000360A   [0009] 
US4732863A   [0017] 

Effect of pegylation on pharmaceuticals   [0002]  [0003] 
Chemistry for peptide and protein PEGylation   [0004]  [0006]  [0007] 
Use of peginterferon alfa-2a (40 KD) (Pegasys) for the treatment of hepatitis C   [0008] 
A Simplified Method for the Preparation of Succinimidyl Carbonate Polyethylene Glycol for Coupling to Proteins   [0014]