磷脂-聚乙二醇-生物素（DSPE-PEG-Biotin），CAS：385437-57-0，所屬分類：Biotin PEG DSPE PEG，MW：2000。質(zhì)量控制在95%+，一般主要用于科研實驗使用。DSPE-PEG-Biotin的分子量可定制，DSPE-PEG5-Biotin、DSPE-PEG3.4-Biotin、DSPE-PEG1-Biotin1k等。

DSPE - PEG - Biotin is a kind of Biotin and DSPE phospholipids functional lecithin PEG derivatives. DSPE (1, 2-2 stearoyl - sn - glycerol - 3 - ethanolamine phosphate) is a kind of highly hydrophobic 18 carbon phospholipids.

On the other hand, the main chain of the PEG has good hydrophilicity and solubility in water. Biotin is a kind of common bioactive molecules, of avidin or chain mildew avidin combination of high affinity.

生物素/鏈霉親和素系統(tǒng)被廣泛應(yīng)用于蛋白質(zhì)、核酸等生物分子的檢測和純化。生物素修飾的DSPE-PEG可與脂質(zhì)體等納米粒子結(jié)合，可用于親和素或鏈霉親和素結(jié)合底物的靶向檢測。

它溶于水和緩沖液等有機溶劑，較少溶于醇、甲苯，不溶物乙醚。磷脂-聚乙二醇-生物素需在-20°冷凍、避光、干燥儲藏。此類產(chǎn)品應(yīng)現(xiàn)配現(xiàn)用，取用后充入惰性氣體并及時放入冰箱。