Flutax 2

Tocris Bioscience | Catalog # 6254

Green-fluorescent taxol derivative; binds microtubules. Used for: imaging microtubules in live cells, isolated cytoskeletons and microtubule suspensions
Tocris Bioscience
Discontinued Product
6254 has been discontinued. View all Microtubule Probes products.

Key Product Details

Description

Green-fluorescent taxol derivative; binds microtubules. Used for: imaging microtubules in live cells, isolated cytoskeletons and microtubule suspensions

Wavelength

Excitation = 496 nm, Emission = 526 nm

Product Description

Key information

: Flutax 2 is a green-fluorescent taxol derivative; for microtubules labeling in live cells.

Used for: imaging microtubules in live cells, isolated cytoskeletons and microtubule suspensions.

Application: fluorescence microscopy.

Properties and Photophysical Data: The fluorescent label on Flutax 2 is attached by derivatization of the 7-β-hydroxy group of native paclitaxel which permits selective binding of the probe to microtubules. Flutax 2 binds microtubules with high affinity (Ka ~ 107M-1). Flutax 2 binds to α, β tubulin dimers and stabilizes them. Flutax 2 is soluble and pH insensitive and is more photostable than Flutax 1 (Cat. No. 2226). Excitation and emission maxima (λ) are 496 nm and 526 nm, respectively.

Scientific Data Images for Flutax 2

Application of Flutax 2 for labeling HeLa cells

Flutax 2 labeled HeLa cells.

Flutax 2 was diluted in HBSS and applied to live HeLa cells at a concentration of 2 μM. HeLa cells were incubated for 1 hour at 37°C. After incubation was complete, Flutax 2 was washed off, and fresh HBSS was applied to the cells. Cells were not fixed because Flutax 2 staining is not retained at all after fixation (photobleach). Like Flutax 1, Flutax 2 staining in live cells diminishes very rapidly when exposed to light, so the cells should be exposed to light as little as possible to retain good signal.

Optical Data

Flutax 2 Dye Spectra
λabs 496 nm
λem 526 nm
Extinction Coefficient (ε) 80000 M-1cm-1
Quantum Yield (φ) 0.9
Application Fluorescence Microscopy

Spectra Viewer

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Product Specifications for Flutax 2

Molecular Weight

1319.28

Formula

C71H64F2N2O21

Storage

Store at -20°C

Purity

≥90% (HPLC)

Chemical Name

(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-Bis(acetyloxy)-9-[(2R,3S)-3-(benzoylamino)-2-hydroxy-1-oxo-3-phenylpropoxy]-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-4-yl ester N-[(2',7'-difluoro-3',6'-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl)carbonyl]-L-alanine

CAS Number

301844-13-3

PubChem ID

44571006

InChI Key

UTOYCOKRJWZPNT-SQNCZLKBSA-N

SMILES

O=C1[C@@]2(C)C([C@@]3(OC(C)=O)[C@H](OC3)C[C@@H]2OC([C@H](C)NC(C4=CC=C(C5=C(C=C6F)C(OC7=C5C=C(F)C(O)=C7)=CC6=O)C(C(O)=O)=C4)=O)=O)[C@H](OC(C8=CC=CC=C8)=O)[C@@]9(O)C(C)(C)C([C@H]1OC(C)=O)=C(C)[C@@H](OC([C@H](O)[C@H](C%10=CC=CC=C%10)NC(C%11=CC=CC=C%11)=O)=O)C9

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
DMSO 1.32 1

Preparing Stock Solutions for Flutax 2

The following data is based on the product molecular weight 1319.28.

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
0.01 mM 75.80 mL 378.99 mL 757.99 mL
0.05 mM 15.16 mL 75.80 mL 151.60 mL
0.1 mM 7.58 mL 37.90 mL 75.80 mL
0.5 mM 1.52 mL 7.58 mL 15.16 mL

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Background References

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

Product Documents for Flutax 2

Certificate of Analysis

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Product Specific Notices for Flutax 2

For research use only

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