# Sulfo-Cyanine 5-PEG3-Biotin

**Cod produs:** A270298 · **Brand:** Antibodies · **Categorie:** Assistive Reagents

Sulfo-Cyanine 5-PEG3-Biotin este un produs din categoria Assistive Reagents, marca Antibodies, cod A270298. Se livrează în mărimile 1mg și 5mg, la prețuri între 1.364,28 și 2.761,83 lei cu TVA. Produse destinate exclusiv cercetării. Nu se utilizează în diagnostic sau tratament.

## Specificații

| Caracteristică | Valoare |
| --- | --- |
| Product form | Dark blue solid. |
| Molecular weight | 1037.36 Da |
| Purity | 95% (by 1H NMR and HPLC-MS). |
| Extinction coefficient | 271000 M-1cm-1 |
| Fl quantum yield | 0.28 |
| Emission maxima | 662 nm |
| Solubility | Good in water, DMF, and DMSO. |
| Absorption maxima | 646 nm |
| CF260 | 0.04 |
| CF280 | 0.04 |
| Storage | Shipped at room temperature. Upon delivery, store in the dark at -20°C. Avoid prolonged exposure to light. Desiccate. |
| Formulă moleculară | C48H65N6KO11S3 |

## Mărimi și prețuri

| Mărime | Cod și preț (RON, TVA inclus) |
| --- | --- |
| 1mg | A270298-1 · 1.364,28 lei |
| 5mg | A270298-5 · 2.761,83 lei |

## Descriere

Sulfo-Cyanine 5 is a far-red fluorophore widely used for biomolecule labeling, with excitation maximum at 646 nm and emission maximum at 662 nm. Far-red fluorescent tags with excitation above 600 nm and emission further than 650 nm are valuable for imaging techniques because of the lower background autofluorescence at these wavelengths. Besides, far-red fluorescent labels can be imaged simultaneously with near-red, orange, green, and blue tags, which is advantageous for multicolor imaging. Biotin, or the water-soluble vitamin H, is well known not only for playing essential roles in various crucial metabolic cellular reactions but also for its extremely high affinity for avidin, a glycoprotein of egg white. Avidin, streptavidin (bacterial analogue of avidin), and neutravidin (deglycosylated avidin) bind non-cooperatively to biotin with high affinity. Thus, sulfo-Cyanine 5 biotin conjugate can be used for detecting and quantifying biotin binding sites of avidin, streptavidin, and neutravidin in samples of different origin. Sulfo-Cyanine 5 biotin conjugate is a water-soluble reagent and its fluorescence is pH independent from pH 4 to pH 10. A flexible PEG3 linker between biotin moiety and fluorescent tag provides binding to avidin, streptavidin, or neutravidin without steric troubles. The major applications of sulfo-Cyanine 5 biotin conjugate include imaging (e.g. primary and secondary antibody labeling for Western Blotting, immunoassay, cyto- and histochemistry, flow cytometry), affinity and dissociation constant measuring, streptavidin-based sensors, etc.

## Documentație

- [Fișă tehnică (PDF)](https://www.antibodies.com/datasheets/270/A270298.pdf)

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Sursă: https://reactivi.ro/produs/sulfo-cyanine-5-peg3-biotin/ · actualizat 9 septembrie 2026