Synonyms: | NHS-dPEG(R)4-( m-dPEG(R)8)3-ester;9,12,15,18,25,32,35,38,41,44,47,50,53-Tridecaoxa-6,22,29-triazatetrapentacontanoic acid, 5,21,28-trioxo-23,23-bis(5-oxo-2,9,12,15,18,21,24,27,30-nonaoxa-6-azahentriacont-1-yl)-, 2,5-dioxo-1-pyrrolidinyl ester |