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AQuora® 550-NHS Ester (QBD-11973LF)



AQuora® 550-NHS Ester is an amine-reactive fluorophore engineered with SuperHydrophilic™ technology designed to improve solubility during labeling and of the dye-labeled conjugate. As a result, the dye-labeled conjugates made with AQuora® 550-NHS Ester yield enhanced signal and signal-to-noise ratios in fluorescence-based applications, including fluorescent western blotting, fluorescence-based microscopy, flow cytometry, and cell-based assays. AQuora® 550-NHS Ester is a cyanine-based dye with photophysical properties comparable to Alexa Fluor® 555, Cy3, DyLight® 550, and DyLight® 550 2x PEG.

This AQuora® 550-NHS Ester dye is activated with an N-hydroxysuccinimide (NHS) ester group, which reacts with free primary amines, such as the amines on the side chain of lysines, forming a stable amide bond.

Alexa Fluor® and DyLight® are registered trademarks of Thermo Fisher Scientific.


Unit Size1mg
StorageStore at -20°C. Protect from light. May ship at ambient temperatures.
Country of OriginUnited States of America
LabelAQuora® 550
Excitation / Emission Maximum554 nm / 570 nm
A280 Correction Factor0.080
Reactive GroupNHS Ester
Extinction Coefficient150,000
Spectrally Similar DyesAlexa Fluor® 555, Cy3, DyLight® 550, and DyLight® 550 2x PEG
Molecular Weight1530

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