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iFluor® 568 succinimidyl ester
AAT Bioquest's iFluor® dyes are optimized for labeling proteins, particularly antibodies. These dyes are bright, photostable, and have minimal quenching on proteins. They can be well excited by the major laser lines of fluorescence instruments (e.g., 350, 405, 488, 555, and 633 nm). iFluor® 568 dyes have fluorescence excitation and emission maxima essentially identical to those of Alexa Fluor® 568 dyes. These spectral characteristics make them excellent alternatives to Alexa Fluor® 568 dyes (Alexa Fluor® is the trademark of Invitrogen). Under the same conditions we tested, iFluor® 568-labeled anti-IgG and streptavidin conjugates are brighter and more photostable than the corresponding Alexa Fluo® 568 conjugates. iFluor® 568 SE is reasonably stable and shows good reactivity and selectivity with protein amino groups.
<p>HeLa cells were incubated with mouse anti-tubulin followed with&nbsp;iFluor<sup>TM</sup>&nbsp;568 goat anti-mouse IgG conjugate (Red). Cell nuclei were stained with DAPI&nbsp;(Blue, Cat#17507).</p>
<p>HeLa cells were incubated with mouse anti-tubulin followed with&nbsp;iFluor<sup>TM</sup>&nbsp;568 goat anti-mouse IgG conjugate (Red). Cell nuclei were stained with DAPI&nbsp;(Blue, Cat#17507).</p>
CatalogSize
Price
Quantity
10491 mg
Price
71049100 ug
Price
715225 mg
Price
7157210 mg
Price
 
Physical properties

Molecular weight1173.46
SolventDMSO
Spectral properties

Correction factor (260 nm)0.34
Correction factor (280 nm)0.15
Extinction coefficient (cm -1 M -1)
100000
1
Excitation (nm)568
Emission (nm)587
Quantum yield
0.57
1
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12171501
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Page updated on October 8, 2025