Ald-CH2-PEG5-t-butyl ester，Ald-CH2-PEG5-Boc

Cbz-N-amido-PEG4-acid，Cbz-NH-PEG4-C2-acid

Azido-PEG7-NHS ester

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

Ald-Ph-PEG2-acid，Ald-Ph-amido-PEG2-C2-acid

Azido-PEG1-CH2CO2H，(2-Azidoethoxy)acetic acid

Azido-PEG8-acid，N3-PEG8-CH2CH2COOH

Ald-Ph-PEG3-O-NH-Boc，Ald-Ph-PEG4-NH-Boc

Carboxy-PEG5-sulfonic acid

Azido-PEG2-NHS ester，N3-PEG2-C2-NHS ester

Azido-PEG12-NHS ester

Azido-PEG1-NHS ester

Ald-CH2-PEG8-azide

Azido-PEG2-CH2CO2H

Azido-PEG24-acid

Ald-Ph-PEG2-amine TFA salt，Ald-Ph-amido-C2-PEG2-amine

Acid-PEG12-t-butyl ester

Ald-PEG4-azide，N3-PEG4-CH2CH2CHO

Ald-Ph-PEG3-amine TFA salt，Ald-Ph-amido-PEG3-C2-NH2

Azido-PEG9-acid