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  4. Difluorocarboxyfluorescein NHS Ester, 6-isomer

Difluorocarboxyfluorescein NHS Ester, 6-isomer 

目录号: HY-172728
产品使用指南 技术支持

Difluorocarboxyfluorescein NHS Ester, 6-isomer 是一种与胺反应的荧光素氟化类似物，它克服了荧光素的一些关键限制，包括更高的光稳定性和更低的 pKa（pKa ~ 4.7 对比荧光素的 6.4），使其荧光在生理 pH 范围内基本上对 pH 不敏感。虽然二氟羧基荧光素 NHS 酯的混合异构体是标记蛋白质、肽和核苷酸的首选、常规使用的荧光染料，但纯化用 5(6) 异构体标记的肽和核苷酸可能会很麻烦，因为在 HPLC 纯化中信号会明显增宽。用单一异构体标记的肽和核苷酸通常在 HPLC 纯化中具有更好的分辨率，而这在结合过程中通常是必需的。

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Difluorocarboxyfluorescein NHS Ester, 6-isomer Chemical Structure

Difluorocarboxyfluorescein NHS Ester, 6-isomer Chemical Structure

CAS No. : 2702251-82-7

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Difluorocarboxyfluorescein NHS Ester, 6-isomer 相关抗体

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  • 生物活性

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生物活性

Difluorocarboxyfluorescein NHS Ester, 6-isomer is an amine-reactive fluorinated analog of fluorescein that overcomes some of the key limitations of fluorescein, including greater photostability and a lower pKa (pKa ~ 4.7 versus 6.4 for fluorescein), making its fluorescence essentially pH insensitive in the physiological pH range. Although the mixed isomers of Difluorocarboxyfluorescein NHS Ester, is a preferred, routinely used fluorescent dye for labeling proteins, peptides and nucleotides, purification of peptide and nucleotides labeled with 5(6) isomers might be troublesome due to significant signal broadening in HPLC purification. Peptides and nucleotides labeled with a single isomer usually give better resolution in HPLC purification that is often required in the conjugation processes.

分子量

509.37

Formula

C25H13F2NO9
CAS 号
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.
纯度 & 产品资料

Difluorocarboxyfluorescein NHS Ester, 6-isomer 相关分类

  • 摩尔计算器

  • 稀释计算器

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

质量   浓度   体积   分子量 *
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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2
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  • Do most proteins show cross-species activity?

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Keywords:

Difluorocarboxyfluorescein NHS Ester, 6-isomer2702251-82-7Fluorescent DyeInhibitorinhibitorinhibit

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