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49349

Sigma-Aldrich

Atto 425 maleimide

BioReagent, suitable for fluorescence, ≥70% (coupling to thiols)

Empirical Formula (Hill Notation):
C28H33N3O7
Molecular Weight:
523.58
MDL number:
PubChem Substance ID:
NACRES:
NA.32

Quality Level

product line

BioReagent

assay

≥70% (coupling to thiols)

manufacturer/tradename

ATTO-TEC GmbH

fluorescence

λex 437 nm; λem 483 nm in 0.1 M phosphate pH 7.0

suitability

suitable for fluorescence

storage temp.

−20°C

SMILES string

CCOC(=O)C1=Cc2cc3C(C)CC(C)(C)N(CCCC(=O)NCCN4C(=O)C=CC4=O)c3cc2OC1=O

InChI

1S/C28H33N3O7/c1-5-37-26(35)20-14-18-13-19-17(2)16-28(3,4)31(21(19)15-22(18)38-27(20)36)11-6-7-23(32)29-10-12-30-24(33)8-9-25(30)34/h8-9,13-15,17H,5-7,10-12,16H2,1-4H3,(H,29,32)

InChI key

CUWXBTJMNRLPKT-UHFFFAOYSA-N

Application

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. Atto 425 maleimide is suitable for fluorescence labeling of thiol/SH containing molecules.

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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.

Certificate of Analysis

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Certificate of Origin

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Katrin G Heinze et al.
Biophysical journal, 86(1 Pt 1), 506-516 (2003-12-26)
Confocal fluorescence spectroscopy is a versatile method for studying dynamics and interactions of biomolecules in their native environment with minimal interference with the observed system. Analyzing coincident fluctuations induced by single molecule movement in spectrally distinct detection channels, dual-color fluorescence
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
Triple FRET: a tool for studying long-range molecular interactions.
Elke Haustein et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 4(7), 745-748 (2003-08-07)
Irina M Kuznetsova et al.
PloS one, 7(2), e30724-e30724 (2012-03-03)
A new approach for the determination of the amyloid fibril - thioflavin T (ThT) binding parameters (the number of binding modes, stoichiometry, and binding constants of each mode) is proposed. This approach is based on the absorption spectroscopy determination of
Frequency domain fluorescence microspectrometry: Application to cellular uptake and drug distribution.
Praus, P., et al.
Spectroscopy: An International Journal, 24, 303-307 (2010)

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