04022
Atto 665 NHS ester
BioReagent, suitable for fluorescence
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About This Item
UNSPSC Code:
12352108
NACRES:
NA.32
Recommended Products
product line
BioReagent
Assay
≥90% (coupling to amines)
mol wt
Mw 820 g/mol
manufacturer/tradename
ATTO-TEC GmbH
fluorescence
λex 663 nm; λem 684 nm in 0.1 M phosphate pH 7.0
suitability
suitable for fluorescence
storage temp.
−20°C
General description
Atto 665 is a new fluorescent label closely related to Atto 647N. It shows extraordinary high fluorescence quantum yield, excellent thermal and photo-stability, outstanding ozone resistance, and very little triplet formation. Atto 665 is a cationic (charge +1). The dye is moderately hydrophilic. The NHS-ester of the dye reacts easily with amino-groups of proteins and other bio-molecules. Since the amino group must be non protonated to be reactive, the pH of the reaction is recommended to be about 8.3. Prepare labeling solution of NHS-ester immediately before use by dissolving the vial content in anhydrous and amine-free DMF or DMSO.
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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.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Articles
Atto dyes are a series of fluorescent dyes that meet the critical needs of modern fluorescent technologies.
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