Poly(ethyleneglycol)bis(nitrophenylcarbonate)(NPC-PEG-NPC)isalinear聽PEGreagentwith聽reactivenitrophenylcarbonateorNPCgrouponbothendsthatcanrapidlyreactwithaminegroup.
1000,2000,3500,5000,10K,20K
1g,5g,10g
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