Atto 665 NHS ester

SIGMA/04022 - BioReagent, suitable for fluorescence

Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-04022-1MG	1 mg	$347.00 1/EAAdd To Favorites	Add To Favorites

assay	≥90% (coupling to amines)
fluorescence	λ_ex 663 nm; λ_em 684 nm in 0.1 M phosphate pH 7.0
manufacturer/tradename	ATTO-TEC GmbH
mol wt	M_w 820 g/mol
product line	BioReagent
Quality Level	100
storage temp.	−20°C
suitability	suitable for fluorescence

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.

find more information here

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.

RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	≥90% (coupling to amines)
Storage Temp.	−20°C
UNSPSC	12352108