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R6G NHS ester, 5-isomer
| 目录号 | 数量 | 价格 | 提前通知时间 | 购买此产品 |
|---|---|---|---|---|
| 14220 | 1 mg | $110 | 现货 | |
| 24220 | 5 mg | $210 | 现货 | |
| 44220 | 25 mg |
$410
|
现货 | |
| 54220 | 50 mg |
$695
|
现货 | |
| 64220 | 100 mg |
$1190
|
现货 |
Rhodamine 6G (R6G) is a xanthene dye of rhodamine series that has been used for the labeling of oligonucleotides and DNA for quite a long time. Just like other xanthenes, R6G comes as two isomers, 5- and 6-isomer. Even though their absorption and emission spectra are virtually indistinguishable, the isomers need to be separated to avoid separation of the labeled molecules during their purification, i.e. double HPLC peaks and double spots on electrophoresis.
This is an amine reactive NHS ester derived from a pure 5-isomer of R6G. Rhodamine 6G is very bright (even used as a quantum yield standard, yield 0.95). The dye is soluble in organic solvents, such as DMF, or DMSO. They can be used as co-solvents for the labeling reactions.
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Cyanine7 NHS 酯 (Cyanine7 NHS ester)
近红外染料 Cyanine7 的胺反应活性 NHS 酯。sulfo-Cyanine3 dimethyl
sulfo-Cyanine3 dimethyl is a non-functionalized, water-soluble cyanine dye with bright yellow fluorescence.
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TAMRA NHS ester, 6-isomer
NHS-ester of TAMRA dye for proteins, peptides, and modified oligonucleotides labeling via reaction with amino groups. Pure 6-isomer.General properties
| Appearance: | dark colored solid |
| Molecular weight: | 555.58 |
| Molecular formula: | C31H29N3O7 |
| Solubility: | good in DMF, DMSO |
| Quality control: | NMR 1H, HPLC-MS (95%) |
| Storage conditions: | Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate. |
| 安全数据表（MSDS）: | 下载 |
| 产品规格 |
Spectral properties
| Excitation/absorption maximum, nm: | 519 |
| ε, L⋅mol−1⋅cm−1: | 116000 |
| Emission maximum, nm: | 546 |
| Fluorescence quantum yield: | 0.95 |
| CF260: | 0.18 |
| CF280: | 0.17 |
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