HDAC1 Selective Inhibitors

Catalog No. Product Name Information Selective / Pan IC50 / Ki
S3944 Valproic acid (VPA)

Valproic acid (VPA, 2-Propylvaleric Acid, Sodium valproate) is a fatty acid with anticonvulsant properties used in the treatment of epilepsy. It is also a histone deacetylase (HDAC) inhibitor and is under investigation for treatment of HIV and various cancers. Valproic acid (VPA) induces autophagy and mitophagy by upregulation of BNIP3 and mitochondrial biogenesis by upregulating PGC-1α. Valproic acid activates Notch-1 signaling.

Selective HDAC1, IC50: 0.4 mM
S2341 (-)-Parthenolide

(-)-Parthenolide, an inhibitor of the Nuclear Factor-κB Pathway, specifically depletes HDAC1 protein without affecting other class I/II HDACs; Also promotes the ubiquitination of MDM2 and activates p53 cellular functions.

Selective
S1096 Quisinostat (JNJ-26481585) 2HCl

Quisinostat (JNJ-26481585) 2HCl is a novel second-generation HDAC inhibitor with highest potency for HDAC1 with IC50 of 0.11 nM in a cell-free assay, modest potent to HDACs 2, 4, 10, and 11; greater than 30-fold selectivity against HDACs 3, 5, 8, and 9 and lowest potency to HDACs 6 and 7. Phase 2.

Pan HDAC1, IC50: 0.11 nM
S5810 UF010

UF010 is a class I HDAC-selective inhibitor with IC50 values of 0.5 nM, 0.1 nM, 0.06 nM, 1.5 nM, 9.1 nM and 15.3 nM for HDAC1, HDAC2, HDAC3, HDAC8, HDAC6 and HDAC10, respectively.

Pan HDAC1, IC50: 0.5 nM
S2759 Fimepinostat (CUDC-907)

CUDC-907 is a dual PI3K and HDAC inhibitor for PI3Kα and HDAC1/2/3/10 with IC50 of 19 nM and 1.7 nM/5 nM/1.8 nM/2.8 nM, respectively. CUDC-907 induces cell cycle arrest and apoptosis in breast cancer cells. Phase 1.

Pan HDAC1, IC50: 1.7 nM
S1194 CUDC-101

CUDC-101 is a potent multi-targeted inhibitor against HDAC, EGFR and HER2 with IC50 of 4.4 nM, 2.4 nM, and 15.7 nM, and inhibits class I/II HDACs, but not class III, Sir-type HDACs. Phase 1.

Pan HDAC1, IC50: 4.5 nM
S1090 Abexinostat (PCI-24781)

Abexinostat (PCI-24781, CRA-024781) is a novel pan-HDAC inhibitor mostly targeting HDAC1 with Ki of 7 nM, modest potent to HDACs 2, 3, 6, and 10 and greater than 40-fold selectivity against HDAC8. Phase 1/2.

Pan HDAC1, Ki: 7 nM
S8495 WT161

WT161 is a potent, selective, and bioavailable HDAC6 inhibitor with IC50 values of 0.4 nM, 8.35 nM and 15.4 nM for HDAC6, HDAC1 and HDAC2, respectively; shown to have >100-fold selectivity over other HDACs. WT161 induces apoptosis.

Pan HDAC1, IC50: 8.35 nM
S8769 Tinostamustine(EDO-S101)

Tinostamustine(EDO-S101) is a first-in-class alkylating deacetylase inhibitor with IC50 values of 9 nM, 9 nM, 25 nM and 107 nM for HDAC1, HDAC2, HDAC3 and HDAC8 (Class 1 HDACs) respectively and 6 nM, 72 nM for HDAC6 and HDAC10 (Class II HDACs).

Pan HDAC1, IC50: 9 nM
S8464 Citarinostat (ACY-241)

Citarinostat (ACY-241, HDAC-IN-2) is an orally available selective HDAC6 inhibitor with IC50 of 2.6 nM and 46 nM for HDAC6 and HDAC3, respectively. It has 13 to 18-fold selectivity towards HDAC6 in comparison to HDAC1-3.

Pan HDAC1, IC50: 35 nM
S3020 Romidepsin (FK228, Depsipeptide)

Romidepsin (FK228, Depsipeptide, FR 901228, NSC 630176) is a potent HDAC1 and HDAC2 inhibitor with IC50 of 36 nM and 47 nM in cell-free assays, respectively. Romidepsin (FK228/depsipeptide) controls growth and induces apoptosis in neuroblastoma tumor cells.

Pan HDAC1, IC50: 36 nM
S2693 Resminostat

Resminostat (RAS2410) 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.

Pan HDAC1, IC50: 42.5 nM
S1515 Pracinostat (SB939)

Pracinostat (SB939) is a potent pan-HDAC inhibitor with IC50 of 40-140 nM with exception for HDAC6. It has no activity against the class III isoenzyme SIRT I. Pracinostat (SB939) induces apoptosis in tumor cells. Phase 2.

Pan HDAC1, IC50: 49 nM
S8001 Ricolinostat (ACY-1215)

Ricolinostat (ACY-1215, Rocilinostat) is a selective HDAC6 inhibitor with IC50 of 5 nM in a cell-free assay. It is >10-fold more selective for HDAC6 than HDAC1/2/3 (class I HDACs) with slight activity against HDAC8, minimal activity against HDAC4/5/7/9/11, Sirtuin1, and Sirtuin2. Ricolinostat (ACY-1215) suppresses cell proliferation and promotes apoptosis. Phase 2.

Pan HDAC1, IC50: 58 nM
S7292 RG2833 (RGFP109)

RG2833 (RGFP109) is a brain-penetrant HDAC inhibitor with IC50 of 60 nM and 50 nM for HDAC1 and HDAC3 in cell-free assays, respectively.

Pan HDAC1, Ki: 32 nM
S8567 Tucidinostat (Chidamide)

Tucidinostat (Chidamide, HBI-8000, CS-055) is a low nanomolar inhibitor of HDAC1, 2, 3, and 10, the HDAC isotypes well documented to be associated with the malignant phenotype with IC50 values of 95, 160, 67, 78 nM for HDAC1, 2, 3, 10 respectively.

Pan HDAC1, IC50: 95 nM
S2132 SR-4370

SR-4370 is a potent and selective inhibitor of class I HDACs with IC50 of 0.13 µM, 0.58 µM, 0.006 µM, 2.3 µM, 3.7 µM for HDAC 1, HDAC 2, HDAC 3, HDAC 8, HDAC 6, respectively.SR-4370 suppresses AR signaling and in vivo prostate tumor growth.

Pan HDAC1, IC50: 0.13 μM
S6738 TC-H 106

TC-H 106 (Pimelic Diphenylamide 106) is a slow, tight-binding inhibitor of class I histone deacetylases(HDAC) with Ki value of 148 nM, about 102 nM, 14 nM for HDAC1, HDAC2, HDAC3, respectively.

Pan HDAC1, Ki: 148 nM
S1122 Mocetinostat (MGCD0103)

Mocetinostat (MGCD0103, MG0103) is a potent HDAC inhibitor with most potency for HDAC1 with IC50 of 0.15 μM in a cell-free assay, 2- to 10- fold selectivity against HDAC2, 3, and 11, and no activity to HDAC4, 5, 6, 7, and 8. Mocetinostat (MGCD0103) induces apoptosis and autophagy. Phase 2.

Pan HDAC1, IC50: 0.15 μM
S5905 Suberohydroxamic acid

Suberohydroxamic acid (suberic bishydroxamic acid) is a competitive HDAC inhibitor with IC50 values of 0.25 and 0.3 μM for HDAC1 and HDAC3 respectively.

Pan HDAC1, IC50: 0.25 μM
S1053 Entinostat (MS-275)

Entinostat (MS-275, SNDX-275) strongly inhibits HDAC1 and HDAC3 with IC50 of 0.51 μM and 1.7 μM in cell-free assays, compared with HDACs 4, 6, 8, and 10. Entinostat induces autophagy and apoptosis. Phase 3.

Pan HDAC1, IC50: 0.51 μM
S2818 Tacedinaline (CI994)

Tacedinaline (CI994, PD-123654, GOE-5549, Acetyldinaline) is a selective class I HDAC inhibitor with IC50 of 0.9, 0.9, 1.2, and >20 μM for human HDAC 1, 2, 3, and 8, respectively. Phase 3.

Pan HDAC1, IC50: 0.9 μM
S7555 Domatinostat (4SC-202)

Domatinostat (4SC-202) is a selective class I HDAC inhibitor with IC50 of 1.20 μM, 1.12 μM, and 0.57 μM for HDAC1, HDAC2, and HDAC3, respectively. Also displays inhibitory activity against Lysine specific demethylase 1 (LSD1). Phase 1.

Pan HDAC1, IC50: 1.20 μM
S8962 BRD3308

BRD3308 is a potant and highly selective inhibitor of HDAC3 with IC50 of 54 nM, 1.26 μM and 1.34 μM for HDAC3, HDAC1 and HDAC2, respectively. BRD3308 activates HIV-1 transcription. BRD3308 suppresses pancreatic β-cell apoptosis induced by inflammatory cytokines (glucolipotoxic stress) and increases functional insulin release.

Pan HDAC1, IC50: 1.26 μM
S7689 BG45

BG45 is a class I HDAC inhibitor with IC50 of 289 nM, 2.0 µM, 2.2 µM and >20 µM for HDAC3, HDAC1, HDAC2, and HDAC6 in cell-free assays, respectively.

Pan HDAC1, IC50: 2 μM
S7278 HPOB

HPOB is a potent, selective HDAC6 inhibitor with IC50 of 56 nM, >30-fold selectivity over other HDACs.

Pan HDAC1, IC50: 2.9 μM