Mal-PEG3-PFP

N4, N9-di-Boc-spermine

Mal-amido-PEG2-TFP ester

Mal-PEG2-t-butyl ester，Mal-PEG2-C2-Boc

t-Boc-AminooxRuixintane-amine

6-(Tritylthio)hexanoic acid

6-Maleimidocaproic acid PFP ester

Fmoc-N-amido-PEG4-CH2-aldehyde

Azido-Aca-NHS，N3-C5-NHS ester

MBS，MBS Crosslinker

Ald-CH2-PEG5-azide

Methylamino-PEG1-acid HCl salt，Methylamino-PEG1-acid

Tetraethyl octane-1,8-diylbis(phosphonate)

Azido-PEG7-NHS ester

diethyl 7-bromoheptylphosphonate

Cbz-N-amido-PEG5-acid，Cbz-NH-PEG5-C2-acid

Acid-PEG14-t-butyl ester

N1,N4-Bisazidospermine bistosylate

CarboxRuixiG2-sulfonic acid

Azido-PEG8-NHS ester，N3-PEG8-NHS