N-(m-PEG4)-N'-hydroxypropyl-Cy5

N-(m-PEG4)-N'-(azide-PEG4)-Cy7

Fluorescein-PEG5-Acid

TAMRA-PEG3-Azide

TAMRA-PEG4-acid

Pyrene-PEG4-acid，Pyrene-amido-PEG4-CH2CH2COOH

N-(azide-PEG3)-N'-(Mal-PEG4)-Cy5

BDP FL-PEG5-azide

Pyrene-PEG5-propargyl

N-(m-PEG4)-N'-(PEG2-acid)-Cy5

IR-27

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

BDP FL-PEG5-propargyl

IR-58

6-FAM PEG3-COOH，6-Carboxyfluorescein-PEG3-acid

FAM tetrazine,6-isomer，6-FAM-tetrazine

N-(m-PEG4)-N'-(DBCO-PEG4)-Cy5

Fluorescein-PEG4-Acid

N-(azide-PEG4)-3,3-Dimethyl-3H-indole-N'-(m-PEG3)-Benzothiazole Cy5

Bis-Fluorescein-PEG6