Atto 488 maleimide

SIGMA/28562 - BioReagent, suitable for fluorescence, ≥90% (HPLC)

Synonym: Atto 488

MDL Number: MFCD07784936
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-28562-1MG-F	1 mg	$319.00 1/EAAdd To Favorites		Add To Favorites

λ	in methanol: water (1:1) (with 0.1% perchloric acid)
assay	≥90% (degree of coupling )
	≥90% (HPLC)
manufacturer/tradename	ATTO-TEC GmbH
product line	BioReagent
Quality Level	100
storage temp.	−20°C
suitability	suitable for fluorescence
UV absorption	λ: 501-506 nm A_max

Application:	Atto 488 Maleimide is used for labelling amines, which usually requires a higher pH than the reaction of maleimides with thiols. It is a well-suited fluorescent label for thiol groups.
General description:	Atto 488 Maleimide is a hydrophilic fluorescent label with high molecular absorption (90.000) and quantum yield (0.80). The fluorescence activity is excited at a maximum of 501nm, and the maximum emission is 523nm. Atto 488 Maleimide is optimized for argon laser excitation and characterized by high photostability. Hydrolysis of maleimides to a mixture of isomeric nonreactive maleamic acids can compete significantly with thiol modification, particularly above pH 8. Post coupling to a substrate, the label carries a net electrical charge of -1.
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.