Propargyl-PEG1-SS-PEG1-t-butyl ester，Propargyl-PEG1-SS-PEG1-C2-Boc

Methyltetrazine-amido-Tri-(acid-PEG1-ethoxymethyl)-methane

Biotin-PEG23-amine

2-(Azido-PEG2-amido)-1,3-bis(tert-butyldimethylsilanoxy)propane

t-Boc-N-Amido-PEG3-amine，PROTAC Linker 15，1-Boc-amine-11-amino-3,6,9-trioxaundecane

N-(Azido-PEG4)-N-Boc-PEG4-t-butyl ester，N-(Azido-PEG4)-N-Boc-PEG4-Boc

NH-bis(PEG4-OH)，NH-bis-PEG5

NH2-PEG4-Glu(OH)-NH-m-PEG24

Biotin-PEG4-Amide

t-Boc-Aminooxy-PEG4-acid，Boc-aminoxy-PEG4-acid

Aminooxy-PEG5-azide

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

bis-PEG2-endo-BCN

N-(Azido-PEG3)-N-(PEG3-NH-Boc)-PEG3-acid

N-(Azido-PEG2)-N-bis(PEG4-t-butyl ester)

DNP-PEG4-DBCO

t-Boc-N-amido-PEG23-amine

Amino-PEG8-amine，3,6,9,12,15,18,21,24-Octaoxahexacosane-1,26-diamine

Propargyl-PEG14-alcohol

Amino-PEG4-(CH2)3CO2H，1-Amino-3,6,9,12-tetraoxahexadecan-16-oic acid