JTK-109 is an inhibitor of hepatitis C virus NS5B RNA-dependent RNA polymerase inhibitor and inhibits G1b and G3a subgenomic replicons and recombinant enzymes.
NSC697923 is a potent UBE2N (ubiquitin-conjugating enzyme E2 N, Ubc13) inhibitor. NSC697923 induces neuroblastoma (NB) cell death via promoting nuclear importation of p53 in p53 wild-type NB cells. NSC697923 also induces cell death in p53 mutant NB cells by activation of JNK-mediated apoptotic pathway. NSC697923 inhibits DNA damage and NF-κB signaling. Antitumor activity[1][2].
Tadalafil is a PDE5 inhibitor with an IC50 value of 1.8 nM.IC50 Value: 1.8±0.4nM [1]Target: PDE 5Tadalafil is marketed in pill form for treating erectile dysfunction(ED) under the name Cialis, and under the name Adcirca for the treatment of pulmonary arterial hypertension. Tadalafil can elevate the level of cGMP in the corpus cavernosum and effectively improve ED of various causes and degrees.in vitro: Biochemical potencies (affinities) of these compounds for PDE5 determined by IC(50), K(D) (isotherm), K(D) (dissociation rate), and K(D) ((1/2) EC(50)), respectively, were the following: sildenafil (3.7 +/- 1.4, 4.8 +/- 0.80, 3.7 +/- 0.29, and 11.7 +/- 0.70 nM), tadalafil (1.8 +/- 0.40, 2.4 +/- 0.60, 1.9 +/- 0.37, and 2.7 +/- 0.25 nM); and vardenafil (0.091 +/- 0.031, 0.38 +/- 0.07, 0.27 +/- 0.01, and 0.42 +/- 0.10 nM). Thus, absolute potency values were similar for each inhibitor, and relative potencies were vardenafil >> tadalafil > sildenafil [1]. 0.5 ml tadalafil solutions with different concentrations were added (0.2, 0.1, 0.05 and 0.025 μg ml-1, respectively) into semen samples. In both groups, samples treated with 0.2 μg ml-1 tadalafil had significant increase in sperm motility after 2 h incubation [2].in vivo: The Tadalafil-treated group showed enhanced erectile function (intracavernosal pressure/mean arterial pressure) at 0.3, 0.5, 1, 3, and 5 Hz compared with diabetic group values at the respective frequencies (P <.05) that approached control values [3]. oral administration of tadalafil (20 mg) or sildenafil (100 mg) was given. In both groups, computer-assisted semen analysis parameters showed no significant difference. After the administration of tadalafil (2 h) and sildenafil (1 h), there was no significant difference observed in premature acrosome reaction incidence rate [2].Clinical trial: Study the Safety and Effectiveness of Tadalafil in Men With Problems Getting or Maintaining an Erection When Taken Prior to Desiring an Erection. Phase 3
Betrixaban D6 is a deuterium labeled Betrixaban. Betrixaban is a highly potent, selective, and orally efficacious factor Xa (fXa) inhibitor[1].
Okadaic acid sodium, a marine toxin, is an inhibitor of protein phosphatases (PP). Okadaic acid (sodium) has a significantly higher affinity for PP2A (IC50=0.1-0.3 nM), and inhibits PP1 (IC50=15-50 nM), PP3 (IC50=3.7-4 nM), PP4 (IC50=0.1 nM), PP5 (IC50=3.5 nM), but does not inhibit PP2C. Okadaic acid sodium increases of phosphorylation of a number of proteins by inhibiting PP, and acts a tumor promoter. Okadaic acid sodium induces tau phosphorylation[1][2].
TPN171 is a potent, selective and oral bioavailable inhibitor of phosphodiesterase type 5 (PDE5) with an IC50 of 0.62 nM, being developed for the treatment of pulmonary arterial hypertension (PAH)[1].
PTP1B-IN-9 is a ubiquitin-proteasome system (UPS)-stressor. PTP1B-IN-9 inhibits ubiquitin-mediated protein degradation upstream of the 20S proteasomal catalytic activites. PTP1B-IN-9 triggers a ubiquitin-proteasome-system (UPS)-stress response without affecting 20S proteasome catalytic activities. Anticancer activity[1].
DPP-4-IN-2 (compound b2) is a potent DPP-4 (dipeptidyl peptidase 4) inhibitor, with an IC50of 79 nM. DPP-4-IN-2 is a structurally analogs of Alogliptin (HY-A0023A). DPP-4-IN-2 can be used for diabetes research[1].
Raltegravir-d4 is deuterium labeled Raltegravir. Raltegravir is a potent integrase (IN) inhibitor, used to treat HIV infection.
Suc-Gly-Gly-Phe-pNA is the chymotrypsin substrate with an Km value of 1.6 mM[1][2].
Retinoic acid is a metabolite of vitamin A that plays important roles in cell growth, differentiation, and organogenesis. Retinoic acid is a natural agonist of RAR nuclear receptors, with IC50s of 14 nM for RARα/β/γ. Retinoic acid bind to PPARβ/δ with Kd of 17 nM.
N6022 is a potent, selective, reversible, and efficacious S-Nitrosoglutathione reductase(GSNOR) inhibitor with IC50 of 8 nM.
DPC-681 is a potent and selective inhibitor of HIV protease with IC90s for wild-type HIV-1 of 4 to 40 nM.IC50 value: 4 - 40 nM [1]Target: HIV proteasein vitro: DPC 681 is extremely potent inhibitor of wild-type HIV-1. When all of the HIV-1 strains tested are considered, the average concentrations required for 90% inhibition of replication were 7.3 ± 3.4 for DPC 681. DPC 681 shows no loss in potency toward recombinant mutant HIVs with the D30N mutation and a fivefold or smaller loss in potency toward mutant variants with three to five amino acid substitutions. [1]in vivo: The total body clearance (CL) of DPC 681 in dogs was high (1.8 liter/h/kg) equaling hepatic blood flow for this species (1.8 liter/h/kg). After an oral dosing, the Cmax increased ninefold between the 10- and 30-mg/kg DPC 681 dose groups. Bioavailability also increased between the 10- and 30-mg/kg dose groups (18.3 and 78.1%, respectively). These data suggest that hepatic extraction (first-pass effect) can be saturated in the dog. [1]
IDO-IN-3 is a potent indoleamine 2,3-dioxygenase (IDO) inhibitor with an IC50 of 290 nM.
PluriSln 1 is an inhibitor of stearoyl-coA desaturase (SCD), and is a pluripotent cell-specific inhibitor.
Enniatin B is a Fusarium mycotoxin. Enniatin B inhibits acyl-CoA: cholesterol acyltransferase (ACAT) activity with an IC50 of 113 μM in an enzyme assay using rat liver microsomes[1]. Enniatins B decreases the activation of ERK (p44/p42)[2].
Dichlorphenamide(Diclofenamide) is a carbonic anhydrase inhibitor that is used in the treatment of glaucoma. Target: Carbonic AnhydraseDichlorphenamide is a sulfonamide and a carbonic anhydrase inhibitor of the meta-Disulfamoylbenzene class. This drug has the same side-effects as acetazolamide, for which it is a useful substitute, except for a lesser tendency to cause dermatitis, renal calculi and metabolic acidosis. It may induce a more pronounced renal loss of potassium [1]. An average daily dose of 33 mg of diclofenamide, a carbonic-anhydrase inhibitor, was added to the anti-epileptic medication already employed in 105 cases of severe epilepsy which had shown insufficient clinical improvement. A favourable action on seizures, often accompanied by an improvement in the EEG tracing, was observed in 83 cases. The effect was of long duration in 47 cases in that it lasted for more than a year. It persisted for one to twelve months in a further 17 cases, while in 19 patients, who had reacted favourably to the treatment, medication had to be suspended because of intolerance [2].
Stiripentol (STP) is an anticonvulsant agent, which can inhibit N-demethylation of CLB to NCLB mediatated by CYP3A4 (noncompetitively) and CYP2C19 (competitively) with Ki of 1.59±0.07 and 0.516±0.065 μM and IC50 of 1.58 and 3.29 μM, respectively.
Cedirogant (ABBV-157) is an orally active RORγt inverse agonist. Cedirogant can be used for psoriasis research[1][2].
Oxipurinol (Oxipurinol), the major active metabolite of Allopurinol, is an inhibitor of xanthine oxidase. Oxipurinol can be used to regulate blood urate levels and treat gout[1].
Ftase inhibitor I (B581) is a potent, selective and peptidomimetic farnesyl transferase (FTase) inhibitor. Ftase inhibitor I shows selectivity for FTase over geranylgeranyl isoprenoid (Ras-GG) or the fatty acid myristate (Myr-Ras)[1].
LB-60-OF61 hydrochloride is a potent NAMPT (nicotinamide phosphoribosyltransferase) inhibitor. LB-60-OF61 hydrochloride is a cytotoxic compound with a selectivity towards MYC overexpressing cell lines[1].
Mangostanol ((+)-Mangostanol)) is a natural polyoxygenated xanthone mangostanol isolated from the shell of Garcinia mangostana which has inhibitory effect on cAMP phosphodiesterase (PDE)[1].
MK-8617 is an orally active pan-inhibitor of hypoxia-inducible factor prolyl hydroxylase 1-3 (HIF PHD1-3) with an IC50 of 1 nM for PHD2.
Ono 3403 is a synthetic serine protease inhibitor. Ono 3403 inhibits lipopolysaccharide-induced tumor necrosis factor-alpha and nitric oxide production. ONO-3403 also has an antitumor effect on malignant tumors.
(+)-Ketoconazole is an imidazole anti-fungal agent, a CYP3A4 inhibitor.Target: CYP3A4 (+)-Ketoconazole, an imidazole anti-fungal agent, has often produced features of androgen deficiency including decreased libido, gynecomastia, impotence, oligospermia, and decreased testosterone levels, in men being treated for chronic mycotic infections [1]. (+)-Ketoconazole also is a cytochrome P450 inhibitor [2].(+)-Ketoconazole (KTZ), on the antischistosomal potential of these quinolines against Schistosoma mansoni infection by evaluating parasitological, histopathological, and biochemical parameters. Mice were classified into 7 groups: uninfected untreated (I), infected untreated (II), infected treated orally with PZQ (1,000 mg/kg) (III), QN (400 mg/kg) (IV), KTZ (10 mg/kg)+QN as group IV (V), HF (400 mg/kg) (VI), and KTZ (as group V)+HF (as group VI) (VII). KTZ plus QN or HF produced more inhibition (P<0.05) in hepatic CYP450 (85.7% and 83.8%) and CYT b5 (75.5% and 73.5%) activities, respectively, than in groups treated with QN or HF alone. This was accompanied with more reduction in female (89.0% and 79.3%), total worms (81.4% and 70.3%), and eggs burden (hepatic; 83.8%, 66.0% and intestinal; 68%, 64.5%), respectively, and encountering the granulomatous reaction to parasite eggs trapped in the liver [3].Clinical indications: Candida infection; Dermatophytosis; Folliculitis FDA Approved Date: Toxicity: teratogenesis; liver injuries; adrenal gland problems
Canrenoate (Aldadiene) potassium, a prodrug that releases canrenone, is a potent, competitive mineralocorticoid receptor (aldosterone receptor) antagonist. Potassium canrenoate, as a diuretic, is used for the research of hypertension[1][2][3].
KS100 is a potent ALDH inhibitor with IC50s of 230, 1542, 193 nM for ALDH1A1, ALDH2, and ALDH3A1, respectively. KS100 shows antiproliferative and anticancer effects with low low toxic. KS100 significantly increases ROS activity, lipid peroxidation and toxic aldehyde accumulation. KS10600 induces apoptosis and cell cycle arrest at the G2/M phase[1].
Lovastatin is a cell-permeable HMG-CoA reductase inhibitor used to lower cholesterol.