1-Alaninechlamydocin, a cyclic tetrapeptide, is a potent HDAC inhibitor (IC50=6.4 nM). 1-Alaninechlamydocin induces G2/M cell cycle arrest and apoptosis in MIA PaCa-2 cells.

WW437 is a histone deacetylase (HDAC) inhibitor with potent anti-breast cancer ability in vitro and in vivo.

HDAC-IN-28, a novel HDAC inhibitor, shows potent activities against tumor growth and metastasis

YF479, a novel HDAC inhibitor, displays more potent anti-tumor activity in vitro and in vivo compared with hydroxamic acid (SAHA).

HDAC-IN-33 is a potent HDAC inhibitor with IC50s of 24, 46, and 47 nM for HDAC1, HDAC2 and HDAC6, respectively. HDAC-IN-33 possesses potent antiproliferation activities against tumor cells. HDAC-IN-33 shows potent antitumor efficacy in vivo That trigger antitumor immunity.

LW479, a novel HDAC inhibitor, could be a candidate drug for breast cancer prevention.

HDAC-IN-32 is a potent HDAC inhibitor with IC50s of 5.2, 11, and 28 nM for HDAC1, HDAC2 and HDAC6, respectively. HDAC-IN-32 possesses potent antiproliferation activities against tumor cells. HDAC-IN-32 shows potent antitumor efficacy in vivo That trigger antitumor immunity.

HDAC6-IN-3 (Compound 14), an antiprostate cancer agent, is a potent, orally active HDAC6 inhibitor with IC50s ranging from 0.02-1.54 μM for HDAC1/2/3/6/8/10. HDAC6-IN-3 is also an effective MAO-A (IC50=0.79 μM) and LSD1 inhibitor.

XP5 is a potent, orally active HDAC6 inhibitor with an IC50 of 31 nM. XP5 displays high antiproliferative activity against various cancer cell lines including the HDACi-resistant YCC3/7 gastric cancer cells (IC50=0.16-2.31 μM). XP5 enhances antitumor immunity when combined with a PD-L1 inhibitor in melanoma.

Phenylbutyrate is a potent histone deacetylases (HDACs) inhibitor. Phenylbutyrate can be used for urea cycle disorder research.

4SC-202 is an orally bioavailable benzamide and inhibitor of human class I histone deacetylases (HDACs) isoenzymes 1, 2 and 3, with potential antineoplastic activity. HDAC inhibitor 4SC-202 selectively binds to and inhibits class I HDACs leading to an acc

ACY-738 demonstrates inhibitory activity against recombinant HDAC6 with IC50 values of 1.7 nM, with respective average selectivity over class I HDACs being 100-fold.

BG45 is an HDAC class I inhibitor with selectivity for HDAC3 (IC50 = 289 nM). It inhibits HDAC1, HDAC2, and HDAC6 with greatly reduced potency (IC50s = 2, 2.2, and >20 µM, respectively).

BRD-73954 is a biochemical inhibitor histone deacetylase cancer histone modification epigenetics gene regulation small molecule HDAC6 HDAC8.

HDAC-IN-26 is a highly selective class I HDAC inhibitor with an EC50 value of 4.7 nM.

CXD101(AZD-9468) is a novel histone deacetylase (HDAC) inhibitor with potential antineoplastic activity.

HDAC inhibitor IV is a cell-permeable pimeloylanilide compound that acts as a FXN- (frataxin gene) specific HDAC (histone deacetylase) inhibitor.

ITSA-1 (ITSA1) is an HDAC activator via TSA suppression, but shows no activity towards other HDAC inhibitors.

QTX125 TFA is a potent and highly selective HDAC6 inhibitor. QTX125 TFA exhibits excellent selectivity over other HDACs. QTX125 has antitumor effects.

HDAC/BET-IN-1 displays submicromolar inhibitory activity against HDAC1 and 6 (IC50 = 0.163 μM and 0.067 μM), and BRD4 (Ki = 0.076 μM), and possess potent antileukemia activity.

Dihydrochlamydocin is a Putative HDAC inhibitor.

HDAC1/2-IN-3 is a HDAC1 and HDAC2 inhibitor with IC50 values 0-5 and 5-10 nM, respectively.

Ivaltinostat (CG-200745) formic is a potent HDAC inhibitor which has the hydroxamic acid moiety to bind zinc at the bottom of catalytic pocket. Ivaltinostat formic inhibits deacetylation of histone H3 and tubulin. Ivaltinostat formic induces the accumulation of p53, promotes p53-dependent transactivation, and enhances the expression of MDM2 and p21 (Waf1/Cip1) proteins. Ivaltinostat formic induces apoptosis.

KA2507 hydrochloride is a potent and highly selective inhibitor of HDAC6 (IC50=2.5 nM) with no significant toxicities. KA2507 hydrochloride shows antitumor efficacy and immune modulatory effects.

Pomiferin (NSC 5113) acts as an potential inhibitor of HDAC, with an IC50 of 1.05 μM, and also potently inhibits mTOR (IC50, 6.2 µM).

FNDR-20123 is an orally active, safe and a first-in-class anti-malarial HDAC inhibitor with IC50s of 31 nM and 3 nM for Plasmodium and human HDAC, respectively. FNDR-20123 exerts anti-malarial activity against Plasmodium falciparum asexual stage (IC50=41 nM) and sexual blood stage (IC50=190 nM for male gametocytes). FNDR-20123 inhibits HDAC1/2/3/6/8 (IC50=25/29/2/11/282 nM) and inhibits Class III HDAC isoforms at nanomolar concentrations.

FNDR-20123 free base is an orally active, safe and a first-in-class anti-malarial HDAC inhibitor with IC50s of 31 nM and 3 nM for Plasmodium and human HDAC, respectively. FNDR-20123 free base exerts anti-malarial activity against Plasmodium falciparum asexual stage (IC50=41 nM) and sexual blood stage (IC50=190 nM for male gametocytes). FNDR-20123 free base inhibits HDAC1, HDAC2, HDAC3, HDAC6, and HDAC8 (IC50=25, 29, 2, 11, and 282 nM, respectively) and inhibits Class III HDAC isoforms at nanomolar concentrations.

Ac-Arg-Gly-Lys(Ac)-AMC is a substrate for HDAC.

Psammaplin A, a marine metabolite, is a potent inhibitor of HDAC and DNA methyltransferases. Psammaplin A ia a highly potent and selective DAC1 inhibitor with an IC50 of 0.9 nM. Psammaplin A possess the antimicrobial effect on the Gram-positive bacteria and inhibits DNA synthesis and DNA gyrase activity. Antitumor Activity.

Tucidinostat D4 (Chidamide D4) is the deuterium labeled Tucidinostat. Tucidinostat is a potent and orally bioavailable HDAC enzymes class I (HDAC1/2/3) and class IIb (HDAC10) inhibitor, with IC50s of 95, 160, 67 and 78 nM, respectively.