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68652

Sigma-Aldrich

Atto 633 iodoacetamide

suitable for fluorescence

NACRES:
NA.32

form

powder

Quality Level

manufacturer/tradename

ATTO-TEC GmbH

fluorescence

λex 629 nm; λem 655 nm in 0.1 M phosphate pH 7.0

suitability

corresponds for coupling to thiols
suitable for fluorescence

storage temp.

−20°C

General description

Atto 633 belongs to a new generation of fluorescent labels for the red spectral region. The dye is designed for application in the area of life science, e.g. labelling of DNA, RNA or proteins. Characteristic features of the label are strong absorption, high fluorescence quantum yield, high photostability, good water solubility, and very little triplet formation. Atto 633 is a cationic dye. After coupling to a substrate the dye carries a net
electrical charge of +1. In common with most Atto-labels, absorption and fluorescence are independent of pH, at least in the range of pH 2 to 11, used in typical applications.
The iodoacetamide derivative reacts, like the maleimide, with a sulfhydryl group forming a thioether bond. It is predominantly used for tagging cystein residues of proteins.

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Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

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

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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