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特色产品
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荧光双标-葡聚糖(FITC-TRITC-dextran 500)--活体显微检测的有力工具

发布者:北京博蕾德生物 发布时间:2024-12-13 分享到:
荧光双标-葡聚糖(FITC-TRITC-dextran 500
                                           --活体显微检测的有力工具
产品描述:

FITC- TRITC葡聚糖(FTD)是一种葡聚糖衍生物,用两种荧光团-标记,FITC和TRITC(见图1),分子量为500 kDa。

产品结构:

葡聚糖是由串珠菌B512F菌产生的一类分支多糖。从结构上讲,每个荧光团(FITC和TRITC)都通过硫脲乙烷键与葡聚糖结合(图1)。对于每种荧光团,取代度(DS)在每摩尔葡萄糖单元0.001至0.020摩尔染料的范围内。与葡聚糖结合的FITC/TRITC的摩尔比可以在1:1至2:1之间变化,并在中性pH下进行分光光度评估。产品纯化过程(与相应的FITC和TRITC葡聚糖非常相似),终产物不含FITC、 TRIC游离染料(即未结合的染料或染料副产物)。纯化后对产品的分子量、外观、溶解度、荧光进行检测,实际分子量通过GPC法测定。

光谱数据:

FITC-TRITC葡聚糖为双重荧光标记,当在λex=493 nm(FITC)下光激发时,FITC-TRITC-葡聚糖在λfl=517±5nm处表现出荧光峰,而当在λex=550 nm(TRITC)下激发时,在λfl=575±5nm处显示出荧光峰。FITC- TRITC葡聚糖双重标记的特别之处在于,其中FITC荧光(以及吸光度)高度依赖于pH值,而另一个相应的荧光TRIT在pH2 和10之间保持不变(见图2.)这样可以准确测定活细胞和组织中的pH值,因此该产品是活体显微检测的有力工具。


产品保存

室温,避光封闭保存。

溶解性:

FITC-TRITC葡聚糖呈粉红色粉末状,高度溶于水和DMSO,而与强氧化剂不相容。

产品应用:

FITC- TRITC葡聚糖适用于检测和监测活细胞或组织中的pH值,可检测pH值范围3.5~8.0。

产品订购:
 
品牌 货号 产品名称 分子量 规格
TdB Labs FTD FITC-TRITC-dextran 500 500kDa 1mg/5mg

更多产品详情。请联系TdB Labs 中国区总代理北京博蕾德生物科技有限公司。

 

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