Polysorbate 20 is a polyoxyethylene (POE)-type nonionic surfactant.
性状
Viscous liquid
体外研究(In Vitro)
Addition of Polysorbate 20 can modify lignin surface properties to change its hydrophobicity, hydrogen bonding ability and surface charges, thus reducing the non-productive adsorption of proteins. Polysorbate 20 (0.35%-0.7% w/w) added to 0.05 mol/L of phosphate buffer pH 6.5 dramatically increased the apparent solubility of the drug from 0.8 μg/ml even to 353 μg/ml, while its effect in lower pH or in water was much smaller (20 μg/ml in pH 4.5). The increased concentration of phosphate salts (0.2 mol/l) at pH 6.5 in the presence of 0.7% of polysorbate 20, resulted in further increase of candesartan cilexetil solubility to 620 μg/ml. has not independently confirmed the accuracy of these methods. They are for reference only.
运输条件
Room temperature in continental US; may vary elsewhere.
储存方式
Pure form -20°C 3 years;4°C 2 years
参考文献
[1]. Yu-An Chen, et al. Evaluation of the action of Tween 20 non-ionic surfactant during enzymatic hydrolysis of lignocellulose: Pretreatment, hydrolysis conditions and lignin structure. Bioresour Technol. 2018 Dec;269:329-338. [2]. Katarzyna Hoppe, et al. The effect of polysorbate 20 on solubility and stability of candesartan cilexetil in dissolution media. AAPS PharmSciTech. 2014 Oct;15(5):1116-25.
溶解度数据
In Vitro: DMSO : 50 mg/mL (ultrasonic and warming and heat to 60°C)In Vivo: