PEG15，HO-PEG14-OH

t-butyl ester-PEG5-CH2COOH，Acid-C1-PEG5-Boc

Azido-PEG3-methyl ester

m-PEG12-azide

Hydrox-PEG3-Tos，Tos-PEG3

N-(Azido-PEG3)-N-Boc-PEG3-NHS ester

Fmoc-N-amido-PEG24-acid

THP-PEG5，THP-PEG4-OH

t-Boc-N-amido-PEG2-CH2CO2H，Boc-NH-PEG2-CH2COOH

Fluorescein-PEG6-Amine

1,1,1-Trifluoroethyl-PEG5-alcohol

Azido-PEG12-acid

N-(Azido-PEG4)-N-bis(PEG4-acid) HCl salt，N-(Azido-PEG4)-N-bis(PEG4-acid)

Mal-PEG6-t-butyl ester，Mal-PEG6-Boc

Thiol-PEG3-alcohol，Thiol-C2-PEG2-OH

DBCO-PEG20K-OMe

TBDMS-PEG5，TBDMS-PEG4-OH

PEG18，HO-PEG17-OH

Azide-PEG4-Tos

Azido-PEG4-Amido-Tris