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42424

Sigma-Aldrich

Atto 550

for fluorescence, ≥90% (HPLC)

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MDL number:
NACRES:
NA.32

grade

for fluorescence

assay

≥90% (HPLC)

form

powder

manufacturer/tradename

ATTO-TEC GmbH

λ

in ethanol (with 0.1% trifluoroacetic acid)

UV absorption

λ: 553-559 nm Amax

storage temp.

−20°C

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This Item
510167899842208
vibrant-m

42424

Atto 550

vibrant-m

51016

Atto 550 DPPE

vibrant-m

78998

Atto 550 PPE

vibrant-m

42208

Atto 550 DOPE

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

assay

≥90% (HPLC)

assay

≥90% (TLC)

assay

≥90.0% (HPCE)

assay

≥90.0% (HPCE)

form

powder

form

solid

form

solid

form

-

Quality Level

100

Quality Level

100

Quality Level

-

Quality Level

100

manufacturer/tradename

ATTO-TEC GmbH

manufacturer/tradename

ATTO-TEC GmbH

manufacturer/tradename

ATTO-TEC GmbH

manufacturer/tradename

ATTO-TEC GmbH

General description

Atto 550 is a new label with high molecular absorption (120,000) and quantum yield (0.80) as well as sufficient Stokes shift between excitation and emission maximum. Atto 550 can be used with similar excitation source and fluorescence filters as Cy3® and is characterized by a high photostability.

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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 550, which is similar to Cy3, may be useful in applications such as fluorescence resonance energy transfer (FRET) and as a tag for molecules such as secondary antibodies.

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.
CAB-O-SIL is a registered trademark of Cabot Corp.
Cy3 is a trademark of Cytiva

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Articles

Fluorescence lifetime measurement is advantageous over intensity-based measurements. Applications include fluorescence lifetime assays, sensing and FLI.

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