Methoxyl-PEG16-alcohol

Maleimide-PEG-NHS

Heptaethylene Glycol Monomethyl Ether

HO-PEG15-OH

Fmoc-PEG8-acetic acid

Hydroxy-PEG4-CH2COOtBu

Hydroxy-PEG12-propionic acid

Fmoc-PEG1-propionic acid

Maleimide-PEG12-propionic acid

Fmoc-PEG5-propionic acid

Maleimide-PEG2-NHS Ester

Hydroxy-PEG2-t-butyl ester

Hydroxy-PEG3-propionic acid

Fmoc-PEG4-propionic acid

Fmoc-PEG6-acetic acid

Fmoc-PEG2-NHS Ester

Hydroxy-PEG12-t-butyl ester

Hydroxy-PEG5-CH2COOtBu

Fmoc-PEG-NHS

Hydroxy-PEG1-t-butyl ester