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16805

Sigma-Aldrich

Atto 425 NHS ester

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

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Synonym(s):
Atto 425-N-hydroxysuccinimide ester
Empirical Formula (Hill Notation):
C26H30N2O8
CAS Number:
Molecular Weight:
498.53
MDL number:
PubChem Substance ID:
NACRES:
NA.32

product line

BioReagent

Quality Level

Assay

≥90% (HPLC)
≥90% (degree of coupling)

manufacturer/tradename

ATTO-TEC GmbH

solubility

DMF: soluble
DMSO: soluble
H2O: soluble

λ

in ethanol (with 0.1% trifluoroacetic acid)

UV absorption

λ: 422-428 nm Amax

suitability

suitable for fluorescence

storage temp.

−20°C

SMILES string

CCOC(=O)C1=Cc2cc3C(C)CC(C)(C)N(CCCC(=O)ON4C(=O)CCC4=O)c3cc2OC1=O

InChI

1S/C26H30N2O8/c1-5-34-24(32)18-12-16-11-17-15(2)14-26(3,4)27(19(17)13-20(16)35-25(18)33)10-6-7-23(31)36-28-21(29)8-9-22(28)30/h11-13,15H,5-10,14H2,1-4H3

InChI key

PUEQEMDTFPYCDY-UHFFFAOYSA-N

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Atto 425 NHS ester BioReagent, suitable for fluorescence, ≥90% (HPLC)

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16805

Atto 425 NHS ester

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88793

Atto 532 NHS ester

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41698

Atto 488 NHS ester

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Atto 490LS NHS ester

assay

≥90% (HPLC), ≥90% (degree of coupling)

assay

≥90% (HPLC), ≥90% (degree of coupling)

assay

≥90% (HPLC), ≥90% (degree of coupling)

assay

≥90% (HPLC), ≥90% (degree of coupling)

solubility

DMF: soluble, DMSO: soluble, H2O: soluble

solubility

-

solubility

-

solubility

-

suitability

suitable for fluorescence

suitability

suitable for fluorescence

suitability

suitable for fluorescence

suitability

suitable for fluorescence

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

General description

Atto 425 is a member of the commercially available coumarin derivatives.

Application

Atto 425 NHS ester is used in the development of bifunctional fluorescent, inorganic micro-partices (Zeolite L crystals) designed for targeting or imaging mutliple components . Reacts with amino groups or amine modified oliognucleotides to form a stable amine bond. Utilized as an essential component of molecular beacons, which were designed for use in real-time PCR assays to allow for rapid and accurate identification of gram-negative bacteria . When conjugated with benzylguanine, the fluorescence of Atto 425-NHS is quenched but becomes fluorescent upon labeling of the SNAP-tag fusion protein, making this conjugate an ideal candidate for experiments in living cells . Used as one of the donor probes in three-color FRET experiments designed to investigate the kinetics of RNA-protein complex formation .
Atto fluorescent labels are designed for high sensitivity applications, including single molecule detection. Atto labels have rigid structures that do not show any cis-trans-isomerization. Thus these labels display exceptional intensity with minimal spectral shift on conjugation.

Other Notes

Study of stability during one- and two-photon excitation in fluorescence correlation spectroscopy, FCS; employed in triple-color coincidence analysis.

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

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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P.S. Dittrich, P. Schwille
Applied Physics B: Lasers and Optics, 73, 829-829 (2001)
Handbook of Biophotonics: Vol. 2: Photonics for Health Care (2011)
Frequency domain fluorescence microspectrometry: Application to cellular uptake and drug distribution.
Praus, P., et al.
Spectroscopy: An International Journal, 24, 303-307 (2010)
Anna I Sulatskaya et al.
The journal of physical chemistry. B, 115(39), 11519-11524 (2011-08-26)
The fluorescence of the benzothiazole dye thioflavin T (ThT) is a well-known test for amyloid fibril formation. It has now become evident that ThT can also be used for structural investigations of amyloid fibrils and even for the treatment of
Anna I Sulatskaya et al.
The journal of physical chemistry. B, 116(8), 2538-2544 (2012-01-25)
Benzothiazole dye thioflavin T (ThT) is a sensitive probe for amyloid fibril detection. The ThT probing is based on its unique ability to form highly fluorescent complexes with amyloid and amyloid-like fibrils. In this work we propose an approach of

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