A 485

Catalog # Availability Size / Price Qty
A 485 | CAS No. 1889279-16-6 | Histone Acetyltransferase Inhibitors
1 Image
Description: Potent and selective p300/CBP inhibitor; orally bioavailable

Chemical Name: (1R)-N-[(4-Fluorophenyl)methyl]-2,3-dihydro-5-[[(methylamino)carbonyl]amino]-2',4'-dioxo-N-[(1S)-2,2,2-trifluoro-1-methylethyl]spiro[1H-indene-1,5'-oxazolidine]-3'-acetamide

Purity: ≥98%

Product Details

Biological Activity

A 485 is a potent and selective p300/CREB-binding protein (CBP) HAT domain inhibitor (IC50 values are 2.6 and 9.8 nM for the CBP-bromodomain HAT-C/H3 (BHC) and p300-BHC domains, respectively), which displays > 1000-fold selectivity over closely related HATs. A 485 suppresses proliferation in several hematological malignancies and AR+ prostate cancer cell lines in vitro, and also inhibits tumor growth in a castration-resistant prostate cancer xenograft model. A 485 is orally bioavailable.

To request the negative control for A 485, please fill out the A 486 request form on the SGC website.

External Portal Information

Chemicalprobes.org is a portal that offers independent guidance on the selection and/or application of small molecules for research. The use of A 485 is reviewed on the chemical probes website.

Technical Data

Soluble to 100 mM in DMSO and to 100 mM in ethanol
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.

Additional Information

Licensing Caveats:
This probe is supplied in conjunction with the Structural Genomics Consortium. For further characterization details, please visit the A-485 probe summary on the SGC website.

Product Datasheets

Or select another batch:
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 A 485

There are currently no reviews for this product. Be the first to review A 485 and earn rewards!

Have you used A 485?

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.