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

6-Maleimidocaproic acid，6-马来酰亚胺己酸

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

Ald-Ph-PEG24-TFP ester

4-(2,5-dioxo-2H-pyrrol-1(5H)-yl)butanoic acid，4-Maleimidobutyric acid

Mal-PEG2-alcohol

Mal-amido-PEG11-NH-Boc

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

N-Boc-N'-(PEG1-t-butyl ester)-L-Lysine-OH

Bis-Mal-PEG3

Bis-Mal-PEG11

m-PEG4-benzaldehyde

Mal-amido-PEG24-NHS

Methoxycarbonyl-PEG4-t-butyl ester，Boc-PEG4-methyl propionate

Mal-PEG8-alcohol

Mal-amido-PEG4-acid

Ald-PEG4-azide，N3-PEG4-CH2CH2CHO

Cbz-N-amido-PEG5-acid，Cbz-NH-PEG5-C2-acid

Mal-PEG2-Amide

Ald-Ph-PEG3-azide，Ald-Ph-amido-C2-PEG3-azide