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PEG13，Dodecaethylene glycol ，HO-PEG12-OH
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m-PEG7-acid，m-PEG6-CH2CH2COOH
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Azido-PEG1-CH2CO2-NHS
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3-(m-PEG8-ethoxycarbonyl)propanoic acid，m-PEG8-ethoxycarbonyl-propanoic acid
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m-PEG7-4-nitrophenyl carbonate
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Mal-PEG2-Val-Cit-PAB-OH，Mal-PEG2-Val-Cit-amido-PAB-OH
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Hydrox-PEG8-Tos，Tos-PEG7-OH ，PEG8-Tos
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Azido-PEG36-acid
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Ald-Ph-PEG2-NHS ester，Ald-Ph-amido-PEG2-C2-NHS ester
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Boc-NH-ethyl-SS-propionic acid
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m-PEG8-aldehyde，m-PEG7-CH2CH2CHO
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S-acetyl-PEG16-alcohol