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93711

Sigma-Aldrich

Atto 655

BioReagent, suitable for fluorescence, ≥85% (HPLC)

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About This Item

MDL number:
MFCD03456136
UNSPSC Code:
12352116
PubChem Substance ID:
57653573
NACRES:
NA.32

product line

BioReagent

Quality Level

100

Assay

≥85% (HPLC)

form

powder

manufacturer/tradename

ATTO-TEC GmbH

transmittance

254 nm
655 nm

fluorescence

λex 655 nm; λem 680 nm in 0.1 M phosphate pH 7.0

λ

in ethanol (with 0.1% trifluoroacetic acid)

UV absorption

λ: 652-658 nm Amax

suitability

suitable for fluorescence

storage temp.

−20°C

InChI

1S/C27H33N3O6S/c1-4-29-9-5-7-17-11-20-24(13-22(17)29)36-25-14-23-19(12-21(25)28-20)18(16-37(33,34)35)15-27(2,3)30(23)10-6-8-26(31)32/h11-14,18H,4-10,15-16H2,1-3H3,(H-,31,32,33,34,35)

InChI key

FOYVTVSSAMSORJ-UHFFFAOYSA-N

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Application

Atto labels are designed for highest sensitivity applications. A unique combination of advantages makes them highly favorable tools for all kinds of labeling applications. Some of their properties make them specifically interesting for single molecule detection. Atto labels are based on rigid structures and do not show any cis-trans-isomerization, which lowers the brightness of signals and leads to environment dependency, e.g., spectral shifts by conjugation.
Atto 655 shows a molar extinction of 110,000 and QY of 30% in water (50% in ethanol). Decay time is 1.9 ns.

Other Notes

New red absorbing fluorescent dye with best signal-to-noise ratio and long fluorescence life-time. Useful as a biophysical probe for binding interactions.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Volker Buschmann et al.
Bioconjugate chemistry, 14(1), 195-204 (2003-01-16)
The spectroscopic characteristics (absorption, emission, and fluorescence lifetime) of 13 commercially available red-absorbing fluorescent dyes were studied under a variety of conditions. The dyes included in this study are Alexa647, ATTO655, ATTO680, Bodipy630/650, Cy5, Cy5.5, DiD, DY-630, DY-635, DY-640, DY-650
Bengang Xing et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 17(50), 14170-14177 (2011-11-16)
The molecular interactions of the glycopeptide antibiotic vancomycin (Van) with bacterial cell wall analogues N,N'-diacetyl-L-Lys-D-Ala-D-Ala (Ac(2) KdAdA) and N,N'-diacetyl-L-Lys-D-Ala-D-Lac (Ac(2) KdAdL) were investigated in neat water, phosphate buffer and HEPES buffer by using fluorescence correlation spectroscopy (FCS) and molecular dynamics
Sridharan Rajagopalan et al.
Nucleic acids research, 39(6), 2294-2303 (2010-11-26)
The state of oligomerization of the tumor suppressor p53 is an important factor in its various biological functions. It has a well-defined tetramerization domain, and the protein exists as monomers, dimers and tetramers in equilibrium. The dissociation constants between oligomeric
Ryoji Abe et al.
Journal of the American Chemical Society, 133(43), 17386-17394 (2011-10-08)
Here, we describe a novel reagentless fluorescent biosensor strategy based on the antigen-dependent removal of a quenching effect on a fluorophore attached to antibody domains. Using a cell-free translation-mediated position-specific protein labeling system, we found that an antibody single chain
John G Bruno et al.
Combinatorial chemistry & high throughput screening, 14(7), 622-630 (2011-05-04)
Several different approaches have been taken to development of homogeneous fluorescent aptamer assays including end-labeled beacons and signaling aptamers which are intrinsically quenched by nucleotides. Two new strategies dubbed "intrachain" and "competitive" FRET-aptamer assays are summarized in this review. Intrachain
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