Ald-CH2-PEG10-t-butyl ester，Ald-CH2-PEG10-Boc

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

Mal-amido-PEG2-acid

Ald-CH2-PEG8-azide

Mal-amido-PEG6-acid

Mal-C6-amine TFA salt，Mal-C6-amine TFA

Azido-PEG1-acid，Azido-PEG1-C2-acid

Mal-PEG5-amine TFA salt

Cbz-N-amido-PEG10-acid

Azido-PEG8-CH2CO2H，N3-PEG8-CH2COOH

Mal-amido-PEG24-TFP ester

Ald-PEG1-t-butyl ester，Ald-PEG1-C2-Boc

Acid-PEG5-TEMPO

Acid-PEG3-PFP ester

5-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)pentanoic acid，5-Maleimidovaleric acid

Mal-amido-PEG23-amine

Mal-amido-PEG8-TFP ester

Azido-PEG5-acid，N3-PEG5-COOH

Bis-Mal-PEG6

Mal-Amido-PEG4-t-butyl ester，Mal-Amido-PEG4-Boc