科研用Cholesterol-PEG-NHS，NHS-PEG-CLS，胆固醇-聚乙二醇-活性酯

中文：胆固醇-聚乙二醇-活性酯（MW：5000）

英文：Cholesterol-PEG-NHS，NHS-PEG-CLS

分子量：5k，质量控制：95%+。储藏条件：-20℃长期保存，惰性气体保护避光、干燥。物理性质：固体或液体取决于分子量。溶于常规溶液及大多数有机溶剂。

Active ester at PH7 8.5 react with primary amine groups to form stable amide bond. Polyethylene glycol (peg) to increase the solubility and stability, reduce the former sex peptide and protein, inhibition of non-specific combination of charged molecules on the surface modification.Can modify proteins, peptides and other small molecular materials. Used in medical research, medicinal slow-release, nano new material research, cell culture. 

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