5(6)-SFX (Fluorescein), SE

Tocris Bioscience | Catalog # 6488

Green fluorescent dye for the labeling of primary amines
Tocris Bioscience
Discontinued Product
6488 has been discontinued. View all Standard Fluorescein, Coumarin and Rhodamine-based products.

Key Product Details

Description

Green fluorescent dye for the labeling of primary amines

Wavelength

Excitation = 494 nm, Emission = 518 nm

Product Description

5(6)-SFX (Fluorescein), SE is a green fluorescent dye for the labeling of primary amines. Comprising fluorescein, with a commonly used fluorophore, the hexanoic spacer that separates the fluorophore from the molecule to which it is conjugated and makes the NHS ester group more accessible to biopolymers for conjugation. Excitation maximum = 494 nm; emission maximum = 520 nm, extinction coefficient: 74,000 cm-1M-1.

Please see the protocol for further information on protein/antibody labeling and conjugation.

Optical Data

Emission Color Green
λabs 494 nm
λem 518 nm
Extinction Coefficient (ε) 70000 M-1cm-1
Closest Laser line 488 nm
Reactive Group NHS ester
Reactivity Primary amines
Application Fluorescence Microscopy, Flow Cytometry, Immunofluorescence Assays (i.e. Western Blot, ELISA, etc)

Spectra Viewer

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Product Specifications for 5(6)-SFX (Fluorescein), SE

Molecular Weight

586.55

Formula

C31H26N2O10

Storage

Store at -20°C

Purity

≥90% (HPLC)

Chemical Name

6-[Fluorescein-5(6)-carboxamido]hexanoic acid N-hydroxysuccinimide ester

CAS Number

114616-31-8

PubChem ID

122174028

InChI Key

WAGYELYAQOYZFU-UHFFFAOYSA-N

SMILES

OC1=CC2=C(C3(C4=CC=C(C=C4O2)O)OC(C5=C3C=CC(C(NCCCCCC(ON6C(CCC6=O)=O)=O)=O)=C5)=O)C=C1.OC7=CC8=C(C9(C%10=CC=C(C=C%10O8)O)OC(C%11=C9C=C(C(NCCCCCC(ON%12C(CCC%12=O)=O)=O)=O)C=C%11)=O)C=C7

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

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Solubility

Solvent Max Conc. mg/mL Max Conc. mM
Solubility
DMF 58.65 100
DMSO 58.65 100

Preparing Stock Solutions for 5(6)-SFX (Fluorescein), SE

The following data is based on the product molecular weight 586.55.

Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which all affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:

Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.70 mL 8.52 mL 17.05 mL
5 mM 0.34 mL 1.70 mL 3.41 mL
10 mM 0.17 mL 0.85 mL 1.70 mL
50 mM 0.03 mL 0.17 mL 0.34 mL

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Background References

References are publications that support the biological activity of the product.

Product Documents for 5(6)-SFX (Fluorescein), SE

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot or batch number in the search box below.

Product Specific Notices for 5(6)-SFX (Fluorescein), SE

For research use only

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