计算溶液所需的质量、体积或浓度。
,适用于对基线干扰要求严格的色谱和分析工作流程。
2-8°C储存,避光,充氩。低温运输 。请查阅批次 COA 获取详细规格。
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在色谱分析、有机合成和交叉偶联反应领域已被 71 篇同行评审文献引用。
FITC-dextrans are synthesised by coupling fluoresceinyl isothiocyanate (5-isomer) to selected dextran fractions. All batches are checked for molecular weight, degree of substitution, loss on drying and free FITC. Aladdin produce FITC-dextrans from 4 kDa to 2000 kDa. FITC-dextrans are supplied as a yellow to orange powder.
Structure
Dextran is a branched polysaccharide elaborated by the bacteria Leuconostoc mesenteroides B512F. Dextran is essentially a linear glucose chain linked by α-D-(1 – 6) linkages. The degree of branching is about 5 %. The fluorescein moiety is attached by a stable thiocarbamoyl linkage and the labelling procedure does not lead to any depolymerization of the dextran. FITC-dextrans have from 0.002-0.008 mol FITC per glucose unit. These low levels of substitution confer minimal charges to dextran, which is an essential requirement for permeability studies.
Spectral data
FITC-dextran has an excitation maximum of 493 nm and an emission maximum of 518 nm. Maximal intensity is observed at pH >8.
Application
FITC-dextran is mainly used for studying permeability and microcirculation. It can also be used as a molecular size marker, for studies of drug delivery and more.If you need larger quantities please contact us for a bulk quotation.
| Excitation and Emision Ranges | 493 nm and 518 nm |
|---|
H315: 引起皮肤刺激
H319: 引起严重眼睛刺激
H335: 可能引起呼吸道刺激
P261: 避免吸入灰尘/烟雾/气体/雾/蒸汽/喷雾
P264: 处理后要彻底洗手。
P271: 仅在室外或通风良好的地方使用。
P280: 戴防护手套/穿防护服/戴防护眼罩/戴防护面具。
P312: 打电话给毒物中心或医生。。。如果你觉得不舒服
P302+P352: 如皮肤沾染:用水充分清洗。
P304+P340: 如误吸入:将人转移到空气新鲜处,保持呼吸舒适体位。
P305+P351+P338: 如进入眼睛:用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出,取出隐形眼镜。继续冲洗。
P332+P313: 如发生皮肤刺激:求医/就诊。
P337+P313: 如仍觉眼刺激:求医/就诊。
P405: 密闭存放
P403+P233: 存放在通风良好的地方。保持容器密闭。
P501: 将内容物/容器处理到。。。