Alexa Fluor® 532 dyeAlexa Fluor 532 is a yellow-fluorescent dye with excitation ideally suited for the frequency-doubled Nd:YAG laser line. Alexa Fluor 532 dye is pH-insensitive over a wide molar range, helping ensure that you get stable signals in live-cell imaging applications.

Alexa Fluor 532 conjugates exhibit an excitation maximum at 532 nm and emission maximum at 554 nm. It is particularly useful in multicolor applications, including super-resolution microscopy using dSTORM.


We offer Alexa Fluor 532 dye conjugated to a variety of antibodies and peptides optimized for cellular labeling and detection. In addition, reactive dye forms and protein labeling kits are available to enable you to generate your own antibody conjugates or probes.

Alexa Fluor 532 dye dashboard

Initial brightness

Alexa Fluor 532 dye is used in stochastic optical reconstruction microscopy (STORM)—as an activator in nSTORM and a reporter in dSTORM.



Photostability in buffer


Photostability in antifade


Performance in SRM



Human mononuclear cells were stained with mouse anti human CD4 biotin, washed, stained with streptavidin, Alexa Fluor 532 conjugate, washed, and analyzed by flow cytometry using 532 nm excitation.

Alexa Fluor 532 reactive dyes

Select dye-labeling chemistries for conjugation with the following reactive groups: 

Amine Thiol

Alexa Fluor 532 protein/antibody labeling kits

Select an optimized labeling kit for your target antibody or protein:

Target protein Kit Cat. No.
Site-specific antibody labeling
<1–20 µg mouse IgG1 Zenon Alexa Fluor 532 Mouse IgG1 Labeling Kit Z25003
<1–20 µg rabbit IgG Zenon Alexa Fluor 532 Rabbit IgG Labeling Kit Z25303
Conventional antibody/protein labeling
100 µg antibody/protein Alexa Fluor 532 Antibody/Protein Labeling Kit A20182
1 mg antibody/protein Alexa Fluor 532 Antibody/Protein Labeling Kit A10236

Alexa Fluor dye family

Illuminating research for over 15 years

Alexa Fluor® dyesAlexa Fluor dyes are among the most trusted fluorescent dyes available today. In addition to superior performance, you’ll get a technical support team experienced in problem-solving, >50,000 published references, application and experimental tips, and protocols to help with experimental planning. For an outstanding research experience, choose Alexa Fluor dyes.



Molecular Probes Handbook

Cell stain tool

The significantly revised 11th Edition is the most complete fluorescence labeling and detection reference available. The Molecular Probes Handbook can help you achieve the best experimental results for your fluorescence labeling and detection experiments. View the handbook online or order your own copy.

Go to the Handbook online
Order your copy of the Handbook

Antifade reagents

Cell stain tool

Antifade reagents suppress photobleaching and preserve the signals of your fluorescently labeled target molecules. They offer excellent compatibility with a multitude of dyes across the spectrum, making them especially valuable tools for multicolor applications. For added convenience, some formulations include the nuclear counterstain DAPI, eliminating the need for a separate counterstaining step.

Learn more about SlowFade Antifade reagents
Learn more about ProLong Antifade reagents

Cell stain tool

Cell stain tool

Stain your own cell by using our simulation tool to develop reproducible results with many of our signature fluorescent dyes. Develop your multiplexing strategy for antibody probes, reactive dyes, and counterstains to create your perfectly labeled fluorescent cell.

Go to the cell stain tool

Fluorescence SpectraViewer


Plot and compare spectra and check the spectral compatibility for common fluorophores including all of the fluorescent probes from Thermo Fisher Scientific. The Fluorescence SpectraViewer tool is formatted for both microscope imaging and flow cytometry applications.

Go to the Fluorescence SpectraViewer

Not for resale. Super Bright Polymer Dyes are sold under license from Becton, Dickinson and Company.