Biotin-NHS ester，Biotin NHS

Propargyl-PEG13-alcohol

N-Boc-PEG3-bromide

DBCO-PEG1-acid，DBCO-PEG1-COOH

Propargyl-PEG4-CH2CO2H

mPEG-ICG，MW：1000

DBCO-PEG12-Maleimide，Mal-PEG12-DBCO

Propargyl-PEG4-(CH2)3-methyl ester

t-Boc-Aminooxy-PEG3-azide，Boc-Aminooxy-PEG3-azide

Bis-PEG3-acid，3,3'-[oxybis(ethane-2,1-diyloxy)]dipropanoic acid

endo-BCN-PEG8-acid

Biotin-PEG7-amine

t-Boc-aminooxy-PEG1-propargyl

Benzyl-PEG4-acid

t-Boc-N-amido-PEG4-amine，Boc-NH-PEG4-CH2CH2NH2

2-(Biotin-amido)-1,3-bis(carboxylethoxy)propane，2-(Biotin-amido)-1,3-bis-(C1-PEG1-acid)

TAMRA-Azide-PEG-Biotin

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

Amino-PEG12-CH2CO2-t-butyl ester

N-Desthiobiotin-N-bis(PEG4-t-butyl ester)