SUNBRIGHT DX-100GS

8arm-PEG-octa-glutarate-NHS, Base: Di-xylitol, Mw=10,000 
Chemical Name: 1,4-Butanediol bis[2,3,4,5-tetrakis(succinimidyloxyglutaryl polyoxyethylene-oxy)pentyl] ether
CAS#: 1462257-25-5