Catalog # Availability Size / Price Qty

SAVE +FREE SHIPPING with ACADEMIA23 (See Promo Details)

JQ1-FITC | Fluorescent Probes
1 Image
Description: Fluorescent BET bromodomain probe; suitable for use in TR-FRET

Chemical Name: (S)-5-(3-(1-(4-(4-Chlorophenyl)-2,3,9-trimethyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-6-yl)-2-oxo-7,10,13-trioxa-3-azahexadecan-16-yl)thioureido)-2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid trifluoroacetate

Purity: ≥95%

Product Details

Biological Activity

JQ1-FITC is a fluorescent BET bromodomain probe. It binds with high affinity to BRD4(BD1) and BRD4(BD2) (KD,app = 6.5 nM and 5.8 nM, respectively). Suitable for use in TR-FRET. Excitation and emission maxima (λ) are 495 nm and 525 nm, respectively.

Optical Data for JQ1-FITC

JQ1-FITC Dye Spectra
Emission Color Green
λabs 495 nm
λem 525 nm
Extinction Coefficient (ε) 7500 M-1cm-1
Quantum Yield (φ) 0.92
Closest Laser line 488 nm
Application TR-FRET, Fluorescence polarization assays
Alternative For FITC

Plan Your Experiments

Use our spectra viewer to interactively plan your experiments, assessing multiplexing options. View the excitation and emission spectra for our fluorescent dye range and other commonly used dyes.

Spectral Viewer

Spectral Viewer

Technical Data

Soluble to 10 mM in DMSO
Store at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.

Product Datasheets

Reconstitution Calculator
Molarity Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Molarity Calculator


*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and CoA (available online).


No product specific FAQs exist for this product, however you may

View all Small Molecule FAQs

Reviews for JQ1-FITC

There are currently no reviews for this product. Be the first to review JQ1-FITC and earn rewards!

Have you used JQ1-FITC?

Submit a review and receive an Amazon gift card.

$25/€18/£15/$25CAN/¥75 Yuan/¥1250 Yen for a review with an image

$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image

Submit a Review
Tocris Bioscience is the leading supplier of novel and exclusive tools for life science research with over 30 years' experience in the industry. Tocris is a Bio-Techne brand.