二异丁烯(DIB) ,97%资料: 产品名:二异丁烯(DIB) ,97% 英文名: Diisobutylene CAS号:25167-70-8 分子式:C24H16O7 分子量:112.21 Beilstein号:1098309 MDL号: MFCD00008855 PubChem编号:24863838 属性 溶解性Soluble in chloroform, DMSO, ethanol, and water. 敏感性对空气敏感 存贮条件储存温度2-8℃,充氩保存 熔点200-203°C 密度1.4700 荧光否 IC50否 pK Values否 描述 别名FDA;荧光素二乙酸酯;荧光素双醋酸酯;二乙酸荧光素酯;3,6-Diacetoxyfluoran;Di-O-acetylfluorescein;Diacetylfluorescein;FDA 产品介绍Fluorescein diacetate stains living cells green, and is a substrate for esterases. Fluorescein Diacetate is suitable for use in cell viability assays. Removal of the acetate groups by cellular esterases results in fluorescence in cells with intact membranes. 用途酯酶底物。FDA可透过细胞膜并作为荧光素积蓄在活细胞内。由于荧光素较BCECF或Calcein的亲水性低,因此荧光素从细胞中渗漏的量也高。FDA也可用于流式细胞仪。荧光素的激发和发射波长分别为488 nm和530 nm。