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® 405-Maleimide (QBD-12006LF)



AQuora® 405-Maleimide is a thiol-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® 405-Maleimide yields 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® 405-Maleimide is a pyrene-based dye with photophysical properties comparable to Alexa Fluor 405® and DyLight® 405. It is activated with a maleimide (MAL) group which reacts with a thiol to form a thioether bond. (Alex Fluor® and DyLight® are 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® 405
Excitation / Emission Maximum399 nm /422 nm
A280 Correction Factor0.700
Reactive GroupMaleimide
Extinction Coefficient35,000
Spectrally Similar DyesAlexa Fluor 405® and DyLight® 405
Molecular Weight1280

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