Tasquinimod --- Allosteric HDAC4 Inhibitor

Catalog No. size PriceQuantity
M60235-2S 2 mg solid $129
M60235-10S 10mg solid $529


Tasquinimod (ABR-215050) is a potent and selective allosteric HDAC4 inhibitor. It allosterically binds (Kd 10-30 nmol/L) to the regulatory Zn(2+) binding domain of HDAC4 that locks the protein in a conformation preventing HDAC4/N-CoR/HDAC3 complex formation. This binding inhibited colocalization of N-CoR/HDAC3, thereby inhibiting deacetylation of histones and HDAC4 client transcription factors, such as HIF-1α, which are bound at promoter/enhancers where epigenetic reprogramming is required for cancer cell survival and angiogenic response. In vivo Tasquinimod was effective as a monotherapeutic agent against human prostate, breast, bladder, and colon tumor xenografts by oral dosing. Tasquinimod also targets infiltrating myeloid cells, and modulates local tumour immunity by blocking the interaction between S100A9 and its ligands receptor of advanced glycation end products and Toll-like receptor 4. Currently it is in phase III clinical trials to treat advanced tumors.

Product information

CAS Number: 254964-60-8

Molecular Weight: 406.36

Formula: C20H17F3N2O4

Chemical Name: 4-hydroxy-5-methoxy-N,1-dimethyl-2-oxo-N-(4-(trifluoromethyl)phenyl)-1,2-dihydroquinoline-3-carboxamide

Smiles: CN(C1C=CC(=CC=1)C(F)(F)F)C(=O)C1=C(O)C2C(=CC=CC=2N(C)C1=O)OC


InChi: InChI=1S/C20H17F3N2O4/c1-24(12-9-7-11(8-10-12)20(21,22)23)18(27)16-17(26)15-13(25(2)19(16)28)5-4-6-14(15)29-3/h4-10,26H,1-3H3

Technical Data

Appearance: Solid Power.

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO up to 100 mM

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined.

HS Tariff Code: 382200

How to use

In Vitro:

Tasquinimod was used at 1-10 µM final concentration in various in vitro assays.

In Vivo:

Tasquinimod was dosed to mice bearing PC-82 , CWR-22Rv1, LAPC-4, or LNCaP prostate cancer xenografts orally at 30 mg/Kg once per day.


  1. Raymond E, et al. Mechanisms of action of tasquinimod on the tumour microenvironment. (2014) Cancer Chemother Pharmacol. 73(1):1-8.
  2. Isaacs JT, et al. Tasquinimod Is an Allosteric Modulator of HDAC4 survival signaling within the compromised cancer microenvironment. (2013) Cancer Res. 73(4):1386-99.
  3. Isaacs JT, et al. Identification of ABR-215050 as lead second generation quinoline-3-carboxamide anti-angiogenic agent for the treatment of prostate cancer. (2006) Prostate. 66(16):1768-78.

Products are for research use only. Not for human use.


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