Atto 647N NHS ester

SIGMA/18373 - BioReagent, suitable for fluorescence, ≥90% (HPLC)

MDL Number: MFCD07370582
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-18373-1MG-F	1 mg	$363.00 1/EAAdd To Favorites		Add To Favorites
45-18373-5MG-F	5 mg	$0.00 1/EA CALL FOR PRICEAdd To Favorites		Add To Favorites

λ	in ethanol (with 0.1% trifluoroacetic acid)
assay	≥90% (degree of coupling)
	≥90% (HPLC)
form	solid
manufacturer/tradename	ATTO-TEC GmbH
product line	BioReagent
Quality Level	100
storage temp.	−20°C
suitability	suitable for fluorescence
UV absorption	λ: 641-647 nm A_max

Application:	Atto 647N 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. labeling of DNA, RNA or proteins. Characteristic features of the label are strong absorption, excellent fluorescence quantum yield, high photostability, excellent ozone resistance, good solubility, and very little triplet formation. Atto 647N is a cationic dye. The active ester of Atto 647N fluorescence dye reacts with amino groups under mild conditions. 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 in the range of 2 to 11, used in typical applications. As supplied Atto 647N consists of a mixture of two isomers with practically identical absorption and fluorescence properties.
General description:	Atto 647N is a superior red-emitting fluorescence dye with a strong absorption, excellent fluorescence quantum yield (65%), high photostability, excellent ozone resistance, good solubility, and very little triplet formation.
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.