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Branched polyalkylene glycols

  • US 20030219404A1
  • Filed: 06/24/2002
  • Published: 11/27/2003
  • Est. Priority Date: 12/24/1999
  • Status: Active Grant
First Claim
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1. A branched polyalkylene glycol wherein two single-chain polyalkylene glycols are linked to a group having a cyclic structure other than a plane structure, and wherein a group having reactivity with an amino acid side chain, an N-terminal amino group or a C-terminal carboxyl group in a polypeptide or a group convertible into the group having reactivity is linked to the group having a structure other than a plane structure.

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