DBCO-PEG15-amine，DBCO-PEG15-NH2

Azido-PEG5-acid，N3-PEG5-COOH

Cbz-N-amido-PEG20-acid

Mal-PEG8-NHS ester

Mal-PEG3-alcohol

Acid-PEG5-TEMPO

Mal-amido-PEG9-NH-Boc

9-(Azide-PEG9-ethylcarbamoyl)nonanoic t-butyl ester

DBCO-PEG12-O-amine，DBCO-PEG12-O-NH2

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

Ald-Phenyl-PEG5-t-butyl ester，Ald-Ph-PEG5-Boc

Mal-PEG6-PFP

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

Azido-PEG24-NHS ester

Mal-amido-PEG23-amine

Thalidomide-O-PEG4-t-butyl ester，Thalidomide-O-PEG4-Boc

DBCO-PEG12-amine，DBCO-PEG12-NH2

Mal-amido-PEG36-TFP ester

Mal-amido-PEG2-TFP ester

Azido-PEG3-aminoacetic acid-NHS ester