FAP targeting peptide-PEG2 conjugate

FAP-targeting peptide-PEG2 conjugate (Example A1) is the polypeptide and linker conjugate component of Unlabeled FXX489. Unlabeled FXX489 serves as a ligand targeting fibroblast activation protein (FAP) .

C(C=1C=2C(NC1)=CC=CC2)[C@@H]3NC(=O)[C@H](CCCCCC)NC(=O)[C@H](CC4=CC=C(CNC(COCCOCCN)=O)C=C4)NC(=O)[C@H](CC5=CC=CC=C5)N(C)C(=O)CNC(=O)CNC(=O)[C@@]6(N(C(=O)[C@H](CC(O)=O)NC(=O)[C@H](CCCCNC(=O)N7CCN(CC(O)=O)CC7)NC(=O)CNC3=O)CCC6)[H]