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18373

Sigma-Aldrich

Atto 647N NHS ester

BioReagent, suitable for fluorescence, ≥90% (HPLC)

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About This Item

MDL number:
MFCD07370582
UNSPSC Code:
12352108
NACRES:
NA.32

product line

BioReagent

Quality Level

100

Assay

≥90% (HPLC)
≥90% (degree of coupling)

form

solid

manufacturer/tradename

ATTO-TEC GmbH

λ

in ethanol (with 0.1% trifluoroacetic acid)

UV absorption

λ: 641-647 nm Amax

suitability

suitable for fluorescence

storage temp.

−20°C

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General description

Atto 647N is a superior red-emitting fluorescence dye with a strong absorption, excellent fluorescence quantum yield (65%), high photostability, excellent ozone resistance, good solubility, and very little triplet formation.

Application

Atto 647N belongs to a new generation of fluorescent labels for the red spectral region. The dye is designed for application in the area of life science, e.g. labeling of DNA, RNA or proteins. Characteristic features of the label are strong absorption, excellent fluorescence quantum yield, high photostability, excellent ozone resistance, good solubility, and very little triplet formation. Atto 647N is a cationic dye. The active ester of Atto 647N fluorescence dye reacts with amino groups under mild conditions. After coupling to a substrate the dye carries a net electrical charge of +1. In common with most Atto-labels, absorption and fluorescence are independent of pH in the range of 2 to 11, used in typical applications. As supplied Atto 647N consists of a mixture of two isomers with practically identical absorption and fluorescence properties.

Legal Information

This product is for Research use only. In case of intended commercialization, please contact the IP-holder (ATTO-TEC GmbH, Germany) for licensing.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

18373-50MG-F:
18373-5X0.24MG-KC:
18373-0.24MG-F:
18373-VAR-F:
18373-1VL-F:
18373-1MG-F:
18373-0.24MG-KC:
18373-0.24MG-FREE:
18373-1MG-BULK-F:
18373-5MG-F:
18373-BULK-F:
18373-5X0.24MG-F:

Certificates of Analysis (COA)

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Jialei Tang et al.
Scientific reports, 7(1), 10945-10945 (2017-09-10)
We report a simple single-molecule fluorescence imaging method that increases the temporal resolution of any type of array detector by >5-fold with full field-of-view. We spread single-molecule spots to adjacent pixels by rotating a mirror in the detection path during
Ioannis Sgouralis et al.
The journal of physical chemistry. B, 123(3), 675-688 (2018-12-21)
We develop a Bayesian nonparametric framework to analyze single molecule FRET (smFRET) data. This framework, a variation on infinite hidden Markov models, goes beyond traditional hidden Markov analysis, which already treats photon shot noise, in three critical ways: (1) it
Thorben Cordes et al.
Physical chemistry chemical physics : PCCP, 13(14), 6699-6709 (2011-02-12)
Modern fluorescence microscopy applications go along with increasing demands for the employed fluorescent dyes. In this work, we compared antifading formulae utilizing a recently developed reducing and oxidizing system (ROXS) with commercial antifading agents. To systematically test fluorophore performance in
Jennifer Z Yao et al.
Journal of the American Chemical Society, 134(8), 3720-3728 (2012-01-14)
Methods for targeting of small molecules to cellular proteins can allow imaging with fluorophores that are smaller, brighter, and more photostable than fluorescent proteins. Previously, we reported targeting of the blue fluorophore coumarin to cellular proteins fused to a 13-amino
Volker Westphal et al.
Science (New York, N.Y.), 320(5873), 246-249 (2008-02-23)
We present video-rate (28 frames per second) far-field optical imaging with a focal spot size of 62 nanometers in living cells. Fluorescently labeled synaptic vesicles inside the axons of cultured neurons were recorded with stimulated emission depletion (STED) microscopy in
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