Bis-aminooxy-PEG7

Aminooxy-PEG3-t-butyl ester，Aminooxy-PEG3-C2-Boc

PEG6-(CH2CO2H)2

t-Boc-Aminooxy-PEG7-methane

Amino-PEG4-acid，H2N-PEG4-COOH，NH2-PEG4-CH2CH2COOH

NH-bis(PEG3-Boc)，NH-bis(PEG3-C2-NH-Boc)

Propargyl-PEG2-methylamine

Bis-propargyl-PEG7

Biotin-PEG3-acid

Propargyl-PEG6-Ms

Amino-PEG36-alcohol

t-Boc-N-amido-PEG15-amine

endo-BCN-PEG2-alcohol

Propargyl-PEG9-alcohol

Methyltetrazine-PEG4-DBCO

Bis-DBCO-PEG4

D-Biotin-PEG6-Thalidomide，Biotin-PEG6-Thalidomide

endo-BCN-PEG6-t-butyl ester

DBCO-PEG1-NHS ester

Biotin-EDA-PEG5-NHS