PEG2-(CH2CO2H)2，3,6-Dioxaoctanedioic acid，3,6-二氧杂辛二酸

t-boc-N-amido-PEG9-azide，Boc-NH-PEG9-azide

bis-PEG4-endo-BCN

DBCO-PEG4-NHS ester

DBCO-Sulfo-Link-biotin

t-boc-N-amido-PEG5-amine，PROTAC Linker 17，Boc-NH-PEG5-CH2CH2NH2

NH-bis(PEG2-t-butyl ester)，NH-bis(PEG2-C2-Boc)

DBCO-PEG8-DBCO

Sulfo DBCO-amine

Biotin-PEG4-acid

Bis-PEG12-acid

t-Boc-N-Amido-PEG4-propargyl，Boc-N-Amido-PEG4-propargyl

DBCO-PEG13-DBCO

N,N'-DME-N,N'-Bis-PEG2-acid

Benzyloxy carbonyl-PEG3-acid

DBCO-PEG24-amine TFA salt

Bis-propargyl-PEG2

t-Boc-Aminooxy-PEG5-azide

m-PEG4-propargyl

DBCO-PEG2-DBCO