Fmoc-PEG12-propionic acid

HO-PEG14-OH

Mal-PEG4-acid

Hydroxy-PEG7-CH2COOtBu

mPEG2-amine

mPEG3-Alkyne

Maleimide-PEG-maleimide

mPEG11-thiol

mPEG5-acetic acid

mPEG24-amine

mPEG4-thiol

Propargyl-PEG3-CH2COOH

Hydroxy-PEG8-propionic acid

mPEG4-azide

mPEG3-Tosylate

Maleimide-PEG-propionic acid

mPEG10-amine

Hydroxy-PEG4-propionic acid

Hydroxy-PEG1-CH2COOtBu

mPEG5-amine