Catalog No.S2693

Resminostat dose-dependently and selectively inhibits HDAC1/3/6 with IC50 of 42.5 nM/50.1 nM/71.8 nM, less potent to HDAC8 with IC50 of 877 nM.

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Resminostat Chemical Structure

Resminostat Chemical Structure
Molecular Weight: 349.4

Validation & Quality Control

Quality Control & MSDS

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Product Description

Biological Activity

Description Resminostat dose-dependently and selectively inhibits HDAC1/3/6 with IC50 of 42.5 nM/50.1 nM/71.8 nM, less potent to HDAC8 with IC50 of 877 nM.
Targets HDAC1 [1] HDAC3 [1] HDAC6 [1]
IC50 42.5 nM 50.1 nM 71.8 nM
In vitro Resminostat [HCl] is acting as a potent inhibitor of recombinant HDAC 1, 3 and 6 isoenzymes with a substrate competitive binding mode. It can induce hyperacetylation of histone H4 in MM cells. Low micromolar concentrations of resminostat abrogates cell growth and strongly induces apoptosis in MM cell lines (OPM-2, NCI-H929, U266 ) as well as primary MM cells. At 1 μM, resminostat inhibits proliferation and induces G0/G1 cell cycle arrest in OPM-2, NCI-H929, U266 MM cell lines accompanied with decreased levels of cyclin D1, cdc25a, Cdk4 and pRb as well as upregulation of p21. Resminostat decreases phosphorylation of 4E-BP1 and p70S6k indicating an interference with Akt pathway signalling. Treatment with resminostat results in increased protein levels of Bim and Bax and decreases levels of Bcl-xL. Caspases 3, 8 and 9 are activated by resminostat. Furthermore, synergistic effects are observed for combinations of resminostat with melphalan and the proteasome inhibitors bortezomib and S-2209. [1]
In vivo Oral resminostat at 600 mg QD continuously d1−5 in a 14 day cycle is well-tolerated. Resminostat shows a favourable PK profile, with high bioavailability and low inter-pt variability. The apparent t 1/2 of oral resminostat ranged from 2.7 to 4.4 hours. The modulation of plasma biomarkers further indicates drug activity. [2]

Protocol(Only for Reference)

Kinase Assay: [1]

Enzymatic HDAC activity assays Forty microliter enzyme buffer (15 mM Tris HCl pH 8.1, 0.25 mM EDTA, 250 mM NaCl, 10% v:v glycerol) containing HDAC1, 3, 6 or 8 activity, 29 μL enzyme buffer and 1 μL resminostat [HCl] at different concentrations are added to a 96-well microtitre plate and the reaction started by the addition of 30μL substrate peptide Ac-NH-GGK(Ac)-AMC (HDAC1, 3 and 6 assays, final concentrations 6 μM for HDAC1, 10μM for HDAC6 and 25μM for HDAC3/DAD) or Ac-RHK(Ac)K(Ac)-AMC (HDAC8 assay, final concentration 50 μM). After incubation for 180 min (HDAC1, HDAC6, HDAC8) or 120 min (HDAC3) at 30°C, the reaction is terminated by the addition of 25 μL stop solution (50 mM Tris HCl pH 8, 100 mM NaCl, 0.5 mg/ml trypsin and 2 μM trichostatin A [TSA]). After incubation at room temperature for further 40 min, fluorescence is measured using a multilabel counter (extinction 355 nm, emission 460 nm) for quantification of AMC generated by tryptic cleavage of the deacetylated peptide. For the calculation of the 50% inhibitory concentration (IC50) values the fluorescence in wells without test compound (1% DMSO, negative control) is set as 100% enzymatic activity and the fluorescence in wells with 2 μM TSA (positive control) are set at 0% enzymatic activity (background fluorescence substracted).

Cell Assay: [1]

Cell lines OPM-2, NCI-H929, RPMI-8226 and U266
Concentrations ~ 10 μM
Incubation Time 48, 96 h
Method WST-1 assay

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Mandl-Weber S, et al. Br J Haematol, 2010, 149(4), 518-528.

[2] J.E. Ang, et al. EJC Supplements, 2008, 6(12), 123-124.

Clinical Trial Information( data from, updated on 2016-07-30)

NCT Number Recruitment Conditions Sponsor
Start Date Phases
NCT02400788 Active, not recruiting Hepatocellular Carcinoma Yakult Honsha Co., LTD April 2013 Phase 1|Phase 2
NCT01277406 Completed Advanced Colorectal Carcinoma 4SC AG January 2011 Phase 1|Phase 2
NCT01037478 Completed Hodgkins Lymphoma 4SC AG December 2009 Phase 2

Chemical Information

Download Resminostat SDF
Molecular Weight (MW) 349.4


CAS No. 864814-88-0
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms RAS2410
Solubility (25°C) * In vitro DMSO 70 mg/mL (200.34 mM)
Ethanol 70 mg/mL (200.34 mM)
Water <1 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name 2-Propenamide, 3-[1-[[4-[(dimethylamino)methyl]phenyl]sulfonyl]-1H-pyrrol-3-yl]-N-hydroxy-, (2E)-

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
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