KT32 (10c) is a potent dual inhibitor of HDAC and Topo II α. KT32 induces cell death through apoptosis.

HDSI-18 is an orally active HDAC6 selective inhibitor (IC50: 1.6 nM). HDSI-18 is cytotoxic to K562, MV4-11, MOLM-13, THP-1, and Jurkat cells (IC50: 0.48, 0.58, 0.91, 1.79, and 4.31 μM, respectively). HDSI-18 activates Caspase-3, induces mitochondrial depolarization and apoptosis, and has antitumor activity.

Fibrostat (Compound 5n) is a selective HDAC6 inhibitor that exerts antifibrotic effects by inhibiting HDAC6 activity, with an IC50 value of 63 nM. It also exhibits good selectivity over HDAC1, HDAC3, HDAC5, HDAC8, HDAC10, and HDAC11. Fibrostat significantly downregulates fibrotic markers (fibronectin and collagen 1) in fibroblasts. Additionally, Fibrostat demonstrated no toxicity in rat-perfused heart and zebrafish larvae models. Fibrostat shows potential for research into fibrosis-related diseases.

FF2039 (compound 1j) is a specific HDAC1, HDAC6, and HDAC isoforms of class I, IIa and IIb PROTAC degrader. FF2039 demonstrates s significant antiproliferative activity against both hematological and solid cancer cell lines, driven by cell cycle arrest and Apoptosis induction. FF2039 inhibits HDAC isoform of HDAC1, HDAC2, HDAC4 and HDAC6 with IC50s of 1.03, 2.15, 12.4 and 0.053 μM, respectively. FF2039 shows antiproliferative activity against different tumor entities of MM.1S, MDA-MB-231 and U-87MG with EC50s of 2.8, 28 and 30 μM, respectively.

DS-103 is an inhibitor for HDAC that inhibits HDAC1, HDAC2, HDAC3, HDAC6 and HDAC8 with IC50s of 0.029, 0.123, 0.022, 0.367 and 9.26 μM, respectively. DS-103 inhibits Plasmodium falciparum 3D7 with IC50 of 5.08 μM. DS-103 exhibits cytotoxicity in cells A2780 and Cal27 with IC50 of 1.48 μM and 1.47 μM, reverses Cisplatin resistance in A2780 and Cal27 with IC50 of 4.62 μM and 2.23 μM. DS-103 exhibits synergistic effect with Cisplatin, enhances Cisplatin-induced apoptosis.

CS4 is a selective HDAC inhibitor with the IC50 values of 38 nM, 12 nM, 5.8 μM, 19 μM and 61 μM against of HDAC1, HDAC6, HDAC8, HDAC4 and HDAC11, respectively. CS4 promotes α-tubulin and histone 3 acetylation. CS4 activates PPARγ and blocks glycolysis. CS4 induces cell cycle arrest at G2 phase and apoptosis, and shows anticancer effect both in vivo and in vitro.

CHDI-00484077 (Compound 12) is a CNS-penetrant class IIa HDAC inhibitor, with IC50s of 0.01 μM (HDAC4), 0.02 μM(HDAC5), 0.02 μM (HDAC7), 0.03 μM (HDAC9) respectively. CHDI-00484077 can be used for research of huntington’s disease.

C1A is a class I/II HDACs and sirtuin inhibitor with an IC50 of 479 nM for HDAC6. C1A induces sustained acetylation of HDAC6 substrates, α-tubulin and HSP90. C1A shows srtong anticancer effcts, and induces apoptosis in cancer cells.

Butyrylhydroxamic acid (N-Hydroxybutanamide) is a potent inhibitor of histone deacetylase (HDAC). Butyrylhydroxamic acid enhances memory in behavioral models of rodents and can be used as memory enhancers, mood stabilizers, and β-chain hemoglobin disease studies.

Bavarostat (EKZ-001) is a BBB-penetrable and selective HDAC6 inhibitor (IC50: 0.06 μM). Bavarostat modulates tubulin acetylation selectively over histone acetylation. Bavarostat can be used for research of cancers and central nervous system (CNS) disorders.

(Rac)-Nanatinostat ((Rac)-CHR-3996, example 44) is a potent HDAC inhibitor with an IC50 of <330 nM. (Rac)-Nanatinostat has anticancer effects and can effectively inhibit the cell growth of HeLa, U937 and HUT cells.

DP308 is a novel and effective 53BP1 tandem Tudor domain (TTD) inhibitor, disrupts the binding between 53BP1 and H4K20me2 peptide with IC50 of 1.69 uM.

Vafidemstat (ORY-2001) is an oral, brain penetrant drug that inhibits LSD1 and MAOB by reducing cognitive impairment, including memory loss and neuroinflammation. It also has neuroprotective effects.

DK1-04e serves as a prodrug for the potent SIRT5 inhibitor DK1-04 (IC50 = 340 nM), demonstrating significant anti-tumor activity in breast cancer models. The compound effectively suppresses mammary tumor progression in both MMTV-PyMT transgenic mice and human xenograft models, with cellular studies confirming SIRT5 inhibition disrupts cancer cell proliferation and transformation.

A-485 is a highly potent and selective small-molecule inhibitor targeting the catalytic activity of p300/CBP histone acetyltransferases (HATs). It demonstrates remarkable inhibitory potency, with IC50 values of 9.8 nM (p300) and 2.6 nM (CBP).

AGK2 is a potent and selective SIRT2 inhibitor, exhibiting an IC50 of 3.5 μM against this target. While it primarily acts on SIRT2, it also weakly inhibits SIRT1 (IC50 = 30 μM) and SIRT3 (IC50 = 91 μM), demonstrating lower potency toward these isoforms.

Disodium (R)-2-Hydroxyglutarate is a competitive inhibitor of α-ketoglutarate-dependent dioxygenases with Ki of 0.628 mM.

​​RBC1HI​​ represents a breakthrough in epigenetic modulation for opioid withdrawal management, demonstrating dual pharmacological activity as a selective HDAC1/HDAC2 inhibitor with neuroprotective properties.

Furamidine dihydrochloride (NSC 305831) tyrosyl-DNA phosphodiesterase (Tdp1), also is a selective protein arginine methyltransferase 1 (PRMT1) inhibitor with IC50 of 9.4 uM.

YEATS4 binder 4e stands out as a highly potent and selective small-molecule inhibitor targeting the epigenetic reader YEATS4. It demonstrates a strong binding affinity with a Ki value of 37 nM. Importantly, this compound exhibits remarkable selectivity, showing over 15-fold preference for YEATS4 compared to other members of the YEATS family, including YEATS1, YEATS2, and YEATS3.

Tasquinimod is an orally active antiangiogenic agent by allosterically inhibiting HDAC4 signalling.

Miravirsen (SPC-3649), a β-d-oxy-locked nucleic acid-modified phosphorothioate antisense oligonucleotide, inhibit the biogenesis of miR-122. Miravirsen (SPC-3649) is used in the study for HCV infections.

EZH2-IN-2 is a EZH2 inhibitor extracted from patent WO2018133795A1, Compound Example 69, with an IC50 of 64 nM. EZH2-IN-2 can be used for the research of cancer or precancerous condition related to EZH2 activity.

SIRT1-IN-1 is a selective SIRT1 inhibitor with an IC50 of 0.205 μM. SIRT1-IN-1 inhibits SIRT2 with an IC50 of 11.5 μM. SIRT1-IN-1, a indole, is a cytomegalovirus (CMV) inhibitors and has antiviral activity.

GSK-3484862 is a non-covalent inhibitor for DNA methyltransferase (Dnmt1). GSK-3484862 induces DNA hypomethylation to against cancer. GSK-3484862 mediates dramatic demethylation in murine embryonic stem cells with minimal non-specific toxicity.

ASH1L inhibitor AS-99 (AS-99) is a first-in-class, potent, selective inhibitor of ASH1L histone methyltransferase with IC50 of 0.79 uM.AS-99 strongly bind to the ASH1L SET domain with Kd values of 0.89 uM.AS-99 displayed no significant inhibition (>100-fold selectivity) at 50 uM against a panel of 20 histone methyltransferases, including NSD1, NSD2, NSD3, and SETD2.AS-99 inhibits the growth of leukemia cells (MV4;11, MOLM13, and KOPN8) harboring different MLL1 translocations with the GI50 values of 1.8-3.6 uM, showed a several fold weaker effect on the proliferation of leukemia cells without MLL1 translocations, such as SET2 and K562, without toxicity in normal cells.AS-99 impairs transcriptional program of MLL fusion proteins and reduces leukemia burden.AS-99 reduced the leukemia burden in the xenotransplantation mouse model of MLL leukemia without affecting blood counts in normal mice.

AS-99 TFA is a first-in-class, potent and selective ASH1L histone methyltransferase inhibitor (IC50= 0.79 µM, Kd= 0.89 µM) with anti-leukemic activity. AS-99 TFA blocks cell proliferation, induces apoptosis and differentiation, downregulates MLL fusion target genes, and reduces the leukemia burden in vivo.

BAY-850 (BAY 850, BAY850) is a potent, isoform selective, cellularly active ATAD2 bromodomain inhibitor with binding IC50 of 166 nM in TR-FRET assay.

Snail/HDAC-IN-1 is a potent Snail/HDAC dual target inhibitor. Snail/HDAC-IN-1 displays potent inhibitory activity against HDAC1 with an IC50 of 0.405 μM and potent inhibition against Snail with a Kd of 0.18 μM. Snail/HDAC-IN-1 increases histone H4 acetylation in HCT-116 cells and decreases the expression of Snail protein to induce cell apoptosis.

RS-1 is a stimulator of the human homologous recombination protein RAD51,enhances homology-directed repair ~2 to 5-fold and increases CRISPR-mediated knock-in efficiencies in vitro and in vivo.