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Sigma-Aldrich

Atto 425

BioReagent, suitable for fluorescence

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About This Item

Empirical Formula (Hill Notation):
C22H27NO6
CAS Number:
652966-03-5
Molecular Weight:
401.45
UNSPSC Code:
12352108
PubChem Substance ID:
329758237
NACRES:
NA.32

product line

BioReagent

Assay

≥90% (HPLC)

form

(Report result)

manufacturer/tradename

ATTO-TEC GmbH

transmittance

254 nm, >90%
425 nm, >90%

fluorescence

λex 440 nm; λem 484 nm

λ

in PBS, pH 7.4
 in ethanol (with 0.1% trifluoroacetic acid)

UV absorption

λ: 423-429 nm Amax

suitability

suitable for fluorescence

shipped in

wet ice

storage temp.

−20°C

SMILES string

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

InChI

1S/C22H27NO6/c1-5-28-20(26)16-10-14-9-15-13(2)12-22(3,4)23(8-6-7-19(24)25)17(15)11-18(14)29-21(16)27/h9-11,13H,5-8,12H2,1-4H3,(H,24,25)

InChI key

WNDDWSAHNYBXKY-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 is suitable for preparation of fluorescence labeling reagents.

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

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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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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
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