Tr-PEG7，Tr-PEG6-OH

m-PEG3-acid chloride，m-PEG3-Propanoyl chloride

THP-PEG6，THP-PEG5-OH

m-PEG37-NHS ester

Dimethylanaline-PEG35-alcohol

Triethylene glycol

m-PEG12-NHS ester

THP-PEG3，THP-PEG2-OH，Tetrahydropyranyldiethyleneglycol

m-PEG4-NHS ester

Tetraethylene glycol

m-PEG6-NHS ester

N-(Iodoacetamido)-Doxorubicin

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

THP-PEG7，THP-PEG6-OH

Hydroxy-PEG4-methyl ester，Hydroxy-PEG4-C2-methyl ester

3-[2-(3-hydroxypropoxy)ethoxy]propan-1-ol

Tr-PEG9，Tr-PEG8-OH

m-PEG7-acid，m-PEG6-CH2CH2COOH

m-PEG10-NHS ester

m-PEG6-acid，m-PEG5-CH2CH2COOH