Patent ID: 8729030

Claim:
A compound, or a pharmaceutically acceptable salt thereof, comprising: (a) a first peptide monomer and a second peptide monomer, said first and second peptide monomer having the same amino acid sequence selected from the group consisting of (AcG)GLYACHMGPIT(1-nal)VCQPLRK (SEQ ID NO:1) and (AcG)GLYACHMGPIT(1-nal)VCQPLR(MeG)K (SEQ ID NO:2); (b) a linker moiety having the chemical structure —C 1 O—CH 2 —X—CH 2 —C 2 O— wherein (i) C 1 O forms an amide bond with an ε-amino group of C-terminal lysine in the first peptide monomer, (ii) C 2 O forms an amide bond with an ε-amino group of C-terminal lysine in the second peptide monomer, and (iii) X has the chemical structure NCO—(CH 2 ) 2 —N 1 H— or in which N 1 and N 2 of X are each covalently attached to a moiety comprising at least one polyethylene glycol (PEG) molecule.