4-Arm PEG-alkyne (4-arm PEG-ALK) is a multiarm PEG derivative with alkyne groups at each terminal of the eight arms connected to one pentaerythritol core. PEG-ALK is one type of click chemistry reagents. Alkyne can be used to conjugate azide-containing groups in mild condition.

https://www.cd-bioparticles.net/p/3596/4-arm-peg-alk

 

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