m-PEG24-Mal

m-PEG8-aldehyde，m-PEG7-CH2CH2CHO

C11-PEG6-alcohol

Fmoc-PEG24-NHS ester

Fmoc-NH-PEG6-CH2COOH

m-PEG37-acid

N-Boc-N'-(mPEG24)-L-Lysine-OH

m-PEG4-Tos

Fmoc-N-amido-PEG4-acid，Fmoc-NH-PEG4-CH2CH2COOH

Hydrox-PEG7-Tos，Tos-PEG6-OH ，PEG7-Tos

Tr-PEG5，Tr-PEG4-OH

m-PEG2-NHS ester

Azido-PEG1-hydrazide HCl Salt

m-PEG3-t-butyl ester，m-PEG3-Boc

THP-PEG12

PC Azido-PEG3-NHS carbonate ester

Phthalamide-PEG3-azide

Tr-PEG9，Tr-PEG8-OH

m-PEG24-acid

Fmoc-N-amido-PEG3-acid，Fmoc-NH-PEG3-CH2CH2COOH