THK-5105, an arylquinoline derivative, displays high binding affinity to tau fibrils. THK-5105 has high binding affinity to tau protein aggregates and tau-rich Alzheimer disease (AD) brain homogenates. 18F-THK-5105 has the potential to act as a tau imaging PET probe[1].
A potent, selective and orally available CGRP receptor antagonist for the prevention of migraine. Migraine Phase 3 Clinical
Compound 48/80 trihydrochloride (C48/80 trihydrochloride) is a mixture of condensation products of N-methyl-p-methoxyphenethylamine with formaldehyde. Compound 48/80 trihydrochloride is also a histamine releaser and a mast cell degranulator. Compound 48/80 inhibits phosphatidylinositol-specific phospholipase C activity from human platelets [1][2][3].
Tetrahydrodeoxycorticosterone, an neurosteroid, is a potent positive allosteric modulator (PAM) of GABAA receptor. Tetrahydrodeoxycorticosterone has potent neuroinhibitory properties[1][2].
Tozadenant is an adenosine A2A receptor antagonist, with Ki of 11.5 nM on human A2A and 6 nM on rhesus A2A.
Purpurin is a natural anthraquinone compound from Rubia tinctorum L.. Purpurin has antidepressant-like effects[1].
Chlorpromazine Hydrochloride is an antagonist of the dopamine D2, 5HT2A, potassium channel andsodium channel. Chlorpromazine binds with D2 and 5HT2A with Kis of 363 nM and 8.3 nM, respectively.
Xanthoplanine, isolated from theroot of Xylopia parviflora, fully inhibits the EC50 ACh responses of both alpha7 and alpha4beta2 nACh receptors with estimated IC50 values of 9 μM (alpha7) and 5 μM (alpha4beta2)[1].
(E)-Osmundacetone is the isomer of Osmundacetone. Osmundacetone significantly suppresses the phosphorylation of MAPKs, including JNK, ERK, and p38 kinases. Osmundacetone has a neuroprotective effect against oxidative stress[1].
Proparacaine Hydrochloride is a voltage-gated sodium channels antagonist with ED50 of 3.4 mM.IC50 Value: 3.4 mM(ED50) [1]Target: Sodium Channelin vitro: Proparacaine is more potent and less toxic than cocaine [1]. Proparacaine significantly increases in FHV-1 (P < 0.01), C. felis, and 28S rDNA Ct values when fusidic acid is used [2].in vivo: Proparacaine inhibits corneal epithelial migration and adhesion through alteration of the actin cytoskeleton [3]. Proparacaine acts like bupivacaine or lidocaine and produces dose-related spinal blockades of motor function, proprioception and nociception. Intrathecal proxymetacaine also produces longer sensory blockade than motor blockade [4].
BMT-145027 is an mGluR5 positive allosteric modulator without inherent agonist activity, exhibits an EC50 of 47 nM.
Meclizine is a histamine H1 receptor antagonist used to treat nausea and motion sicknessTarget: Histamine H1 ReceptorMeclizine is a histamine H1 receptor antagonist used to treat nausea and motion sickness, possesses anticholinergic, central nervous system depressant, and local anesthetic effects [1]. Meclizine is an agonist ligand for mouse CAR (constitutive androstane receptor), and an inverse agonist for human CAR. Meclizine increases mCAR transactivation in a dose-dependent manner, stimulates binding of steroid receptor coactivator 1 to the murine receptor in vitro. In contrast, meclizine suppresses hCAR transactivation and inhibits the phenobarbital-induced expression of the CAR target genes, cytochrome p450 monooxygenase (CYP)2B10, CYP3A11, and CYP1A2, in primary hepatocytes derived from mice expressing hCAR, but not mCAR [2].
AChE-IN-27 (compound 8c) is an AChE inhibitor (IC50=0.19 µM). AChE-IN-27 can be used in studies of neurological diseases such as alzheimer's disease, dementia, ataxia and myasthenia gravis[1].
Ca2+ channel agonist 1 is an agonist of N-type Ca2+ channel and an inhibitor of Cdk2, with EC50s of 14.23 μM and 3.34 μM, respectively, and is used as a potential treatment for motor nerve terminal dysfunction.
UNC9994 hydrochloride is a functionally selective, β-arrestin–biased dopamine D2 receptor (D2R) agonist that selectively activates β-arrestin recruitment and signaling. UNC9994 hydrochloride shows a binding affinity with a Ki of 79 nM for D2R. UNC9994 hydrochloride is also an antagonist of Gi-regulated cAMP production and partial agonist for D2R/β-arrestin-2 interactions. UNC9994 hydrochloride shows antipsychotic-like activity[1].
Tat-NR2B9c (TFA) is a 20-aa peptide, which acts as a postsynaptic density-95 (PSD-95) inhibitor, with an EC50 of 6.7 nM for PSD-95d2 (PSD-95 PDZ domain 2), and 670 nM for PSD-95d1[1]. Tat-NR2B9c also reduces NMDA-induced p38 activation, and possesses neuroprotective efficacy[2].
Afegostat D-Tartrate is a pharmacological chaperone, which specifically and reversibly binds acid-β-glucosidase (GCase) in the endoplasmic reticulum (ER) with high affinity[1].
Xanomeline(LY246708) is a selective M1 muscarinic receptor agonist.IC50 value:Target: M1 muscarinic receptorin vitro: Xanomeline had high affinity for muscarinic receptors in brain homogenates, but had substantially less or no affinity for a number of other neurotransmitter receptors and uptake sites. In cells stably expressing genetic m1 receptors, xanomeline increased phospholipid hydrolysis in CHO, BHK and A9 L cells to 100, 72 and 55% of the nonselective agonist carbachol. In isolated tissues, xanomeline had high affinity for M1 receptors in the rabbit vas deferens (IC50 = 0.006 nM), low affinity for M2 receptors in guinea pig atria (EC50 = 3 microM), was a weak partial agonist in guinea pig ileum and was neither an agonist nor antagonist in guinea pig bladder [1]. Xanomeline produced small increases in striatal acetylcholine levels and did not antagonize the large increases in acetylcholine produced by the nonselective muscarinic agonist oxotremorine, indicating that xanomeline did not block M2 autoreceptors [2]. in vivo: Xanomeline increased striatal levels of dopamine metabolites, presumably by acting at M1 heteroreceptors on dopamine neurons to increase dopamine release. In contrast, xanomeline had only a relatively small effect on acetylcholine levels in brain, indicating that it is devoid of actions at muscarinic autoreceptors [1]. The effects of xanomeline on ex vivo binding and DOPAC levels lasted for about 3 hr and were evident after oral administration. An analog of xanomeline with similar in vivo effects did not inhibit acetylcholinesterase or choline acetyltransferase and inhibited choline uptake only at concentrations much higher than those required to inhibit binding. These data indicate xanomeline is selective agonist for M1 over M2 and M3 receptors in vivo in rat [2].
Reserpine hydrochloride is an inhibitor of the vesicular monoamine transporter 2 (VMAT2).
PD 144418 oxalate is a highly affinity, potent and selective sigma 1 (σ1) receptor ligand (Ki values of 0.08 nM and 1377 nM for σ1 and σ2 respectively). PD 144418 oxalate devoids of any significant affinity for other receptors, ion channels and enzymes. PD 144418 oxalate shows potential antipsychotic activity[1][2].
Mumefural is a bioactive component of the processed fruit of Prunus mume Sieb. Mumefural inhibits platelet aggregation. Mumefural shows anti-thrombotic effects and ameliorates cognitive impairment[1][2].
ML204 is a novel potent antagonist that selectively modulates native TRPC4/C5 ion channels.IC50 value:Target: TRPC4/C5 inhibitorML204 inhibited TRPC4β-mediated intracellular Ca(2+) rise with an IC(50) value of 0.96 μm and exhibited 19-fold selectivity against muscarinic receptor-coupled TRPC6 channel activation. In whole-cell patch clamp recordings, ML204 blocked TRPC4β currents activated through either μ-opioid receptor stimulation or intracellular dialysis of guanosine 5'-3-O-(thio)triphosphate (GTPγS), suggesting a direct interaction of ML204 with TRPC4 channels rather than any interference with the signal transduction pathways. Selectivity studies showed no appreciable block by 10-20 μm ML204 of TRPV1, TRPV3, TRPA1, and TRPM8, as well as KCNQ2 and native voltage-gated sodium, potassium, and calcium channels in mouse dorsal root ganglion neurons. In isolated guinea pig ileal myocytes, ML204 blocked muscarinic cation currents activated by bath application of carbachol or intracellular infusion of GTPγS, demonstrating its effectiveness on native TRPC4 currents [1]. ML204 blocked TRPC4 channels in an electrophysiological assay with an IC value of 2.6 μM and was also active in fluorescent and electrophysiological assays in which TRPC4 channels were activated by different mechanisms, indicating direct block of TRPC4 channels. Selectivity for block of TRPC4 channels was examined in fluorescent and electrophysiological experiments against closely related TRPC channels and more distantly related TRPV, TRPA and TRPM channels, and against non-TRP ion channels. ML204 afforded good selectivity (19-fold) against TRPC6 channels and more modest selectivity against TRPC3 and TRPC5 (9-fold) channels [2].
RU-TRAAK-2 is a completely reversible TRAAK inhibitor, shows no activity for non-K2P channels (Kv1.2, Slo1 and GIRK2).
AChE/BChE-IN-9 (Compound 7a) is a potent, orally active AChE and BChE inhibitor with IC50 values of 5.74 μM and 14.05 μM against hAChE and eqBChE, respectively. AChE/BChE-IN-9 is also an efficacious antioxidant with an IC50 of 57.35 μM. AChE/BChE-IN-9 is able to chelate iron and modulates aggregation of amyloid β1-42. AChE-IN-16 can cross the BBB[1].
Ropivacain is a potent sodium channel blocker and acts as a local anesthetic agent. Ropivacain blocks impulse conduction via reversible inhibition of sodium ion influx in nerve fibrese[1][2]. Ropivacaine is also an inhibitor of K2P (two-pore domain potassium channel) TREK-1 with an IC50 of 402.7 μM in COS-7 cell's membrane[3]. Ropivacaine is used for the research of regional anesthesia and neuropathic pain management[1].
Itanapraced (CHF5074) is a novel γ-secretase modulator, reduces Aβ42 and Aβ40 secretion, with an IC50 of 3.6 and 18.4 μM, respectively.
Fomocaine (P 652) is an orally active local anaesthetic. Fomocaine shows antiarrhythmic activity[1][2].
TPN729MA (TPN729 maleate) is a selective phosphodiesterase type 5 (PDE5) inhibitor with an IC50 value of 2.28 nM. TPN729MA affects erectile function and it can be used for the research of erectile dysfunction[1].
YQA14 is a selective antagonist of D3 receptor.