N-Methylaniline-PEG3-methyltetrazine

DBCO-PEG12-OH

Tetrazine-NHS ester

alpha-lipoic acid-NHS，α-Lipoic acid-NHS

Alkyne-A-DSBSO crosslinker

Methyltetrazine-PEG12-t-butyl ester

Thiol-PEG8-acid，HS-PEG8-CH2CH2COOH

DBCO-PEG12-Tos

Pyrene-PEG2-Propargyl

Methyltetrazine-PEG12-Maleimide

DBCO-PEG16-Benzylamine

Pyrene-PEG4-Propargyl

diSulfo-Cyanine5.5-alkyne，diSulfo-Cy5.5 alkyne

Alkyne-choline

Thiol-PEG4-t-butyl ester，Thiol-PEG4-Boc

N-(Methyltetrazine-PEG4)-amido-PEG8-3,4-dithiophenolmaleimide

(2-pyridyldithio)-PEG4-propargyl

Methyltetrazine-amine HCl salt

(2-pyridyldithio)-PEG2-t-butyl ester，(2-Pyridyldithio)-PEG2-Boc

DBCO-PEG3-OTs