Mal-PEG1-Bromide

Ald-Phenyl-PEG2-t-butyl ester，Ald-Ph-PEG2-Boc

Methylamino-PEG3-azide

m-PEG4-benzaldehyde

Azido-PEG5-acid，N3-PEG5-COOH

Boc-TOTA，N-Boc-C1-PEG3-C3-NH2

Mal-amido-PEG10-acid

Acid-PEG12-t-butyl ester

SPDP NHS ester，SPDP Crosslinker

4-((2,5-Dioxo-2,5-dihydro-1h-pyrrol-1-yl)methyl)-n-(prop-2-yn-1-yl)cyclohexanecarboxamide

Decanedioic acid

Fmoc-NH-pentoic acid-NHS-SO3Na

Ald-CH2-PEG8-azide

Azido-PEG9-acid

Mal-PEG6-NHS ester

Mal-PEG8-NHS ester

Azido-PEG12-acid

BB1-NHS ester

N1,N12-Di-boc-spermine

Mal-PEG4-t-butyl ester，Mal-PEG4-Boc