Vector Laboratories is closed for the President’s Day on Monday, February 19th. We will be back in the office on Tuesday, February 20th.
We will respond to emails upon our return. Have a wonderful day.

AQuora® 488-NHS Ester (QBD-11083LF)



AQuora® 488-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® 488-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® 488-NHS Ester is a xanthene-based dye with photophysical properties comparable to Alexa Fluor® 488 & DyLight® 488.

This AQuora® 488-NHS Ester dye is activated with a 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® 488
Excitation / Emission Maximum493 nm / 522 nm
A280 Correction Factor0.110
Reactive GroupNHS Ester
Extinction Coefficient73,000
Spectrally Similar DyesAlexa Fluor® 488 & DyLight® 488
Molecular Weight1250

Applicable patents and legal notices are available at legal notices.

How do I Request a Quote?

To request a quote for products:

  1.  Log in to
  2.  Add the items you wish to quote to the cart;
  3.  View your cart;
  4.  Click on the “Request a Quote” button found below the items in your cart;
  5.  Download your quote