NH-(mPEG)2

NH-(mPEG)₂ consists of a central primary amine group symmetrically linked to two monomethoxy polyethylene glycol chains. The amine group in NH-(mPEG)₂ provides a reactive site for conjugation with carboxyl groups or other electrophiles. NH-(mPEG)₂ is commonly used as a branched hydrophilic spacer, crosslinker, or building block for dendrimer synthesis in bioconjugation and material science.