Mal-PEG4-(PEG3-DBCO)-(PEG3-TCO)
A heterotrifunctional linker containing a DBCO moiety for click chemistry, a TCO moiety for tetrazine ligation and a maleimide group for sulfhydryl conjugation
A heterotrifunctional linker containing a DBCO moiety for click chemistry, a TCO moiety for tetrazine ligation and a maleimide group for sulfhydryl conjugation