N-Boc-PEG23-bromide

N-Boc-N-bis(PEG3-OH)

N-Mal-N-bis(PEG4-NH-Boc)

N-(Boc-PEG5)-N-bis(PEG4-acid)

Azido-PEG11-amine，Azido-dPEG(R)11-amine

m-PEG8-Ms

t-Boc-N-Amido-PEG4-azide，Boc-NH-PEG4-azide

(4-methoxyphenyl)diphenylmethylamino-PEG7，Methoxy-Tr-NH-PEG7

N-methyl-N'-methyl-O-(m-PEG4)-O'-(acid-PEG5)-Cy5

Fmoc-NMe-PEG4-NHS ester

Bis-PEG10-acid

Fluorescein-PEG5-Acid

Azido-PEG4-oxazolidin-2-one

N-Benzyl-N-bis(PEG3-acid)

Bis-Fluorescein-PEG6

Bromo-PEG3-CH2CO2H，Br-PEG3-CH2COOH

Amino-PEG8-t-Boc-hydrazide，Amino-PEG8-hydrazide-Boc

t-Boc-N-amido-PEG10-amine，Boc-NH-PEG10-NH2，BocNH-PEG10-CH2CH2NH2

Amino-PEG36-CONH-PEG36-acid

Fmoc-NH-PEG12-CH2COOH