4ARM-PEG-NH2,四臂PEG氨基,4ARM-PEG-Amine,169501-65-9
MAL-PEG-MAL,马来酰亚胺PEG马来酰亚胺,Maleimide-PEG-Maleimide
COOH-PEG-COOH,羧基PEG羧基,Acid-PEG-carboxyl,39927-08-7
NH2-PEG-NH2,氨基PEG氨基,Amine-PEG-Amine,956496-54-1