PEG

HO-PEG5-COOtBu

HO-PEG6-COOtBu

HO-PEG7-COOtBu

HO-PEG8-COOtBu

HO-PEG9-COOtBu

HO-PEG10-COOtBu

HO-PEG11-COOtBu

HO-PEG12-COOtBu

Fmoc-N-amido-PEG5-acid

Fmoc-N-amido-PEG6-acid

Fmoc-N-amido-PEG8-acid

Fmoc-N-amido-PEG9-acid

Fmoc-N-amido-PEG10-acid

Fmoc-N-amido-PEG12-acid

FmocNH-PEG5-NHS ester?Fmoc-PEG5-NHS ester?

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