HDAC1

Cat. No.

A24069

CAS No.

3384-24-5

9-Hydroxyoctadecanoic acid

Synonyms: 9-Hydroxystearic acid; 9-HSA

9-Hydroxyoctadecanoic acid (9-HSA) is a naturally derived inhibitor of histone deacetylase 1 (HDAC1), inhibiting approximately 66.4% of HDAC1 enzymatic activity at a concentration of 5 μM. It exhibits notable anticancer activity, likely through epigenetic modulation of gene expression, making it a promising compound for cancer research and therapeutic development targeting HDAC1-regulated pathways.

Cat. No.

A24065

CAS No.

1092061-61-4

Crebinostat

Crebinostat is a potent, broad-spectrum histone deacetylase (HDAC) inhibitor with IC₅₀ values of 0.7 nM (HDAC1), 1.0 nM (HDAC2), 2.0 nM (HDAC3), and 9.3 nM (HDAC6). It effectively induces acetylation of histone H3 and H4, and enhances the expression of Egr1, a cAMP response element-binding protein (CREB) target gene. In cultured neurons, Crebinostat increases the density of synapsin-1 puncta along dendrites, indicating enhanced synaptic connectivity. By modulating chromatin-mediated neuroplasticity, Crebinostat has been shown to improve memory performance in mice, supporting its potential for neuropsychiatric and cognitive disorder research.

Cat. No.

A24062

CAS No.

2256079-39-5

CM-1758

CM-1758 is a histone deacetylase (HDAC) inhibitor with demonstrated antitumor activity in vivo. In acute myeloid leukemia (AML) cells, CM-1758 induces the acetylation of non-histone proteins, suggesting a broader epigenetic and post-translational regulatory effect beyond chromatin remodeling. Its dual impact on tumor growth and protein acetylation supports its potential as a therapeutic agent in hematologic malignancies.

Cat. No.

A24060

CAS No.

1817802-18-8

MPT0B390

MPT0B390 is a potent arylsulfonamide-based histone deacetylase (HDAC) inhibitor that also functions as an inducer of tissue inhibitor of metalloproteinases 3 (TIMP3). It exhibits strong antitumor properties, including inhibition of tumor growth, metastasis, and angiogenesis. MPT0B390 shows significant antiproliferative activity against the human colon cancer cell line HCT116, with a GI₅₀ of 0.03 μM, highlighting its potential as a promising candidate for cancer therapy.

Cat. No.

A24057

CAS No.

1246374-97-9

Alteminostat (CKD-581)

Synonyms: CKD-581

Alteminostat (CKD-581) is a potent, broad-spectrum histone deacetylase (HDAC) inhibitor that targets both class I and class II HDAC isoforms. It promotes histone H3 and α-tubulin acetylation, indicating effective inhibition of nuclear and cytoplasmic HDAC activity. Alteminostat is being investigated for its therapeutic potential in hematologic malignancies, including lymphoma and multiple myeloma, and serves as a valuable tool in epigenetic cancer research.

Cat. No.

A24055

CAS No.

1776116-74-5

MC1742

MC1742 is a potent pan-HDAC inhibitor with broad activity across multiple HDAC isoforms, exhibiting IC₅₀ values of 0.1 μM (HDAC1), 0.11 μM (HDAC2), 0.02 μM (HDAC3), 0.007 μM (HDAC6), 0.61 μM (HDAC8), 0.04 μM (HDAC10), and 0.1 μM (HDAC11). It effectively increases acetylation of histone H3 and α-tubulin, markers of HDAC inhibition. MC1742 inhibits the growth of cancer stem cells (CSCs), and induces growth arrest, apoptosis, and differentiation, particularly in sarcoma CSC models, making it a promising candidate for targeting therapy-resistant cancer cell populations.

Cat. No.

A24054

CAS No.

1027971-34-1

SB-429201

SB-429201 is a potent and selective inhibitor of histone deacetylase 1 (HDAC1), with an IC₅₀ of approximately 1.5 μM. It exhibits at least a 20-fold selectivity for HDAC1 over other class I isoforms, including HDAC3 and HDAC8. SB-429201 serves as a valuable tool for studying HDAC1-specific functions and may have potential applications in epigenetic and cancer research.

Cat. No.

A24050

CAS No.

1821669-43-5

BRD2492

BRD2492 (compound 6d) is a potent and selective inhibitor of histone deacetylases HDAC1 and HDAC2, with IC₅₀ values of 13.2 nM and 77.2 nM, respectively. It exhibits over 100-fold selectivity for HDAC1/2 compared to HDAC3 and HDAC6. BRD2492 effectively inhibits the proliferation of breast cancer cell lines, with IC₅₀ values of 1.01 μM for T-47D cells and 11.13 μM for MCF-7 cells, highlighting its potential as a targeted epigenetic therapeutic in breast cancer research.

Cat. No.

A24048

CAS No.

3032969-58-4

YSR734

YSR734 (Compound 21) is a covalent histone deacetylase (HDAC) inhibitor with IC₅₀ values of 110 nM, 154 nM, and 143 nM for HDAC1, HDAC2, and HDAC3, respectively. It induces apoptosis in leukemia cells and promotes myoblast differentiation, making it a valuable compound for both cancer research and studies related to muscle regeneration. YSR734 is particularly relevant in the investigation of therapeutic strategies for Duchenne muscular dystrophy.

Cat. No.

A24044

CAS No.

1404559-91-6

BRD4884

BRD4884 is a potent histone deacetylase (HDAC) inhibitor that selectively targets class I HDACs. It exhibits IC₅₀ values of 29 nM for HDAC1, 62 nM for HDAC2, and 1.09 µM for HDAC3. Its differential potency across HDAC isoforms makes BRD4884 a valuable tool for investigating HDAC1/2-mediated epigenetic regulation and their roles in disease pathogenesis.

Cat. No.

A24043

CAS No.

2641930-61-0

FNDR-20123

FNDR-20123 is a first-in-class, orally active histone deacetylase (HDAC) inhibitor developed for antimalarial therapy. It demonstrates potent inhibitory activity against both Plasmodium and human HDACs, with IC₅₀ values of 31 nM and 3 nM, respectively. FNDR-20123 effectively targets multiple stages of *Plasmodium falciparum*, with IC₅₀ values of 41 nM for the asexual blood stage and 190 nM for male gametocytes. It inhibits HDAC1, HDAC2, HDAC3, HDAC6, and HDAC8 with IC₅₀ values of 25, 29, 2, 11, and 282 nM, respectively, and also exhibits nanomolar-level inhibition of Class III HDAC isoforms. FNDR-20123 shows a favorable safety profile, supporting its potential as a novel antimalarial agent targeting epigenetic regulation.

Cat. No.

A24041

CAS No.

174664-65-4

m-Carboxycinnamic acid bishydroxamide (CBHA)

Synonyms: CBHA

m-Carboxycinnamic acid bishydroxamide is a potent histone deacetylase (HDAC) inhibitor, demonstrating in vitro ID₅₀ values of 10 nM for HDAC1 and 70 nM for HDAC3. It effectively induces apoptosis and suppresses tumor growth, making it a promising candidate for epigenetic cancer therapy and research focused on HDAC1/3-regulated pathways.

Cat. No.

A24038

CAS No.

3059680-59-7

KH16

KH16 is a potent histone deacetylase (HDAC) inhibitor with low nanomolar activity, selectively targeting class I HDACs—HDAC1, HDAC2, and HDAC3—with IC₅₀ values ranging from 6 to 34 nM. It effectively induces apoptosis and exhibits broad-spectrum antitumor activity across cancer cells with diverse gene expression profiles, making it a promising candidate for epigenetic cancer therapy research.

Cat. No.

A24020

CAS No.

2397562-43-3

KPZ560

KPZ560 is a potent inhibitor of histone deacetylases HDAC1 and HDAC2, with IC₅₀ values of 12 nM and 68 nM, respectively. It has been shown to enhance dendritic spine density in granule neurons of mice, indicating potential neurotrophic effects. Additionally, KPZ560 inhibits the proliferation of MCF breast cancer cells, supporting its potential application in both neurobiological and oncological research.

Cat. No.

A23951

JPS016 TFA

JPS016 is a benzamide-based PROTAC that recruits the Von Hippel-Lindau (VHL) E3 ligase to selectively degrade class I histone deacetylases (HDACs). It is a potent degrader of HDAC1/2, leading to broad transcriptional changes and enhanced apoptosis in HCT116 cells, supporting its application in epigenetic and cancer research.

Cat. No.

A24881

CAS No.

83209-65-8

HC-Toxin

HC-Toxin is a potent histone deacetylase (HDAC) inhibitor with an IC50 of 30 nM. This cyclic tetrapeptide effectively induces apoptosis in tumor cells, demonstrating significant anticancer activity. Its mechanism of action makes it valuable for research in cancer therapy and the modulation of gene expression.

Cat. No.

A25362

CAS No.

3038691-85-6

HDAC1/6-IN-3

HDAC1/6-IN-3 is a potent inhibitor of histone deacetylases 1 and 6 (HDAC1 and HDAC6). It demonstrates strong inhibitory activity, with IC50 values of 1.1 nM for HDAC1 and 2.7 nM for HDAC6. This compound effectively induces cell cycle arrest in the G0/G1 phase and promotes both apoptosis and pyroptosis in HepG2 cells. Additionally, HDAC1/6-IN-3 exhibits significant antitumor effects in the HepG2 xenograft model and is valuable for research focused on various types of cancer, including liver, lung, colon, and breast cancers.

Cat. No.

A26012

CAS No.

1629052-58-9

Martinostat

Martinostat is a hydroxylated dialkylcarbamate compound that functions as a histone deacetylase (HDAC) inhibitor. It exhibits significant biological activity by altering acetylation levels, which can influence gene expression and cellular responses. This reagent has applications in the study of neurological disorders and cancer, as well as potential use in quantitative imaging of HDAC activity in vivo across various tissues, including the central nervous system and major peripheral organs.

Cat. No.

A26134

CAS No.

798543-50-7

KBH-A42

KBH-A42 is a potent histone deacetylase (HDAC) inhibitor that exhibits notable anti-inflammatory activity. It effectively reduces TNF-α and nitric oxide (NO) production in LPS-induced murine macrophage RAW 264.7 cells, demonstrating IC50 values of 1.10 µM and 2.71 µM, respectively. This compound is valuable for research applications focused on inflammation and related signaling pathways.

Cat. No.

A26312

CAS No.

1550053-19-4

BRD4097

BRD4097 is a potent inhibitor of histone deacetylases (HDACs), particularly targeting HDAC1, 2, and 3. By employing metal chelation and spatial rejection mechanisms, BRD4097 effectively modulates HDAC activity, leading to alterations in gene expression and chromatin structure. This compound is valuable for investigating the role of HDACs in cholesterol metabolism and Niemann-Pick C1 (NPC1) disease models.

Cat. No.

A26318

CAS No.

2614417-90-0

TW9

TW9 is a potent dual inhibitor that targets bromodomain and extraterminal (BET) proteins and histone deacetylases (HDAC) with KDs of 0.069 μM and 0.231 μM for BRD4(1) and BRD4(2), respectively, and an IC50 of 0.29 μM for HDAC1. This compound is a novel derivative of the BET inhibitor (+)-JQ1 and the class I HDAC inhibitor CI994. TW9 demonstrates significant anti-tumor activity in pancreatic ductal adenocarcinoma (PDAC) and enhances the efficacy of the chemotherapeutic agent Gemcitabine, making it a valuable tool for cancer research applications.

Cat. No.

A26320

CAS No.

3029138-70-0

JAK/HDAC-IN-3

JAK/HDAC-IN-3 is a dual inhibitor targeting Janus kinase (JAK) and histone deacetylases (HDAC). It exhibits potent inhibitory activity with IC50 values of 25.36 nM for JAK2, and 0.2 μM and 0.43 μM for HDAC and HDAC1, respectively. This compound is valuable for investigating the roles of JAK and HDAC pathways in cellular processes and disease models, particularly in cancer and inflammatory research.

Cat. No.

A26322

CAS No.

2757573-68-3

HDAC/BET-IN-1

HDAC/BET-IN-1 is a potent inhibitor of histone deacetylases HDAC1 and HDAC6, with IC50 values of 0.163 μM and 0.067 μM, respectively. Additionally, it targets BRD4 with a Ki of 0.076 μM. This compound demonstrates significant antileukemia activity, making it a valuable tool for studying epigenetic regulation and potential therapeutic applications in leukemia research.

Cat. No.

A26324

CAS No.

3062867-16-4

HDAC6-IN-71

HDAC6-IN-71 is a selective inhibitor of histone deacetylase 6 (HDAC6), exhibiting an IC50 of 13.68 nM for HDAC6 and 443.12 nM for HDAC1. This compound effectively reduces nitric oxide production in mouse macrophages, with an IC50 of 2.31 μM. By inhibiting the HDAC6-NF-κB signaling pathway, HDAC6-IN-71 leads to decreased phosphorylation of IκB-α and IKK-α/β, and downregulates the expression of key inflammatory mediators such as COX-2 and iNOS. Its efficacy has been demonstrated in models of ulcerative colitis, highlighting its potential for therapeutic applications in inflammatory diseases.

Cat. No.

A26327

CAS No.

3049802-32-3

ZG-126

ZG-126 is a potent histone deacetylase (HDAC) inhibitor with an IC50 range of 0.63-67.6 μM, also functioning as an agonist for the vitamin D receptor (VDR). This compound demonstrates significant cytotoxicity against cancer cell lines, including MDA-MB-231 and 4T1. In murine models, ZG-126 exhibits robust antitumor and anti-metastatic effects, particularly in melanoma and triple-negative breast cancer (TNBC). Additionally, it displays anti-inflammatory properties by reducing macrophage infiltration and promoting a shift away from immunosuppressive M2 polarization.