Dynorphin A, an endogenous opioid peptide, is a highy potent kappa opioid receptor (KOR) activator. Dynorphin A also serve as an agonist for other opioid receptors, such as mu (MOR) and delta (DOR)[1].
Clobenpropit dihydrobromide is a potent histamine H3R antagonist/inverse agonist with a pEC50 of 8.07 for histamine H3LR[1]. Clobenpropit dihydrobromide acts as partial agonist at histamine H4 receptors (Ki 13 nM). Clobenpropit dihydrobromide also binds to serotonin 5-HT3 receptors (Ki 7.4 nM) and α2A/α2C adrenoceptors (Ki 17.4/7.8 nM)[2]. Clobenpropit dihydrobromide increases apoptosis[3].
RPT193 is an orally active inhibitor of CCR4, blocks the recruitment of Th2 inflammatory immune cells into inflamed tissues. RPT193 can be used for allergic inflammation in atopic dermatitis, asthma, and other diseases research[1].
EP4 receptor antagonist 4 is an EP4 receptor agonist with the human pEC50 value of 6.3[1].
Lafutidine-d10 is deuterium labeled Lafutidine. Lafutidine (FRG-8813) is a histamine H2-receptor antagonist (H2RA), with proven gastric mucosal protective effects. Lafutidine can be used for the research of gastroesophageal reflux disease[1].
H4R antagonist 2 (page 68), a Furo[3,2-d]pyrimidine derivative, is a potent H4R antagonist. H4R antagonist 2 can be used in research of rheumatoid arthritis[1].
Opiranserin (VVZ-149) hydrochloride, a non-opioid and non-NSAID analgesic candidate, is a dual antagonist of glycine transporter type 2 (GlyT2) and serotonin receptor 2A (5HT2A), with IC50s of 0.86 and 1.3 μM, respectively. Opiranserin hydrochloride shows antagonistic activity on rP2X3 (IC50=0.87 μM). Opiranserin hydrochloride is development as an injectable agent for the treatment of postoperative pain[1][2][3].
GPR40/FFAR1 modulator 1 is an agonist and an allosteric modulator for Gq-coupled free fatty acid receptor 1 (GPR40/FFAR1)[1].
A-192621 is a potent, nonpeptide, orally active and selective endothelin B (ETB) receptor antagonist with an IC50 of 4.5 nM and a Ki of 8.8 nM. The selectivity of A-192621 is 636-fold higher than ETA (IC50 of 4280 nM and Ki of 5600 nM). A-192621 promotes apoptosis in PASMCs. A-192621 alos causes elevation of arterial blood pressure and an elevation in the plasma ET-1 level[1][2][3].
CYN 154806, a cyclic octapeptide, is a potent and selective somatostatin sst2 receptor antagonist, with pIC50 values of 8.58, 5.41, 6.07, 5.76 and 6.48 for human recombinant sst2, sst1, sst3, sst4 and sst5 receptors respectively[1][2].
ADX71743 is a highly selective, noncompetitive and brain-penetrant metabotropic glutamate receptor 7 negative allosteric modulator (mGlu7 NAM). ADX71743 has anxiolytic-like activity[1][2].
TUG-905 is a potent GPR40 agonist with an pEC50 value of 7.03. TUG-905 increases hypothalamic cell proliferation and survival. TUG-905 reduces body mass and increases the POMC mRNA expression[1][2].
A2A receptor antagonist 1 is an antagonist of both adenosine A2A receptor and A1 receptor with Kis of 4 and 264 nM, respectively.
Hydroxyzine Dihydrochloride is a histamine H1-receptor antagonist.Target: Histamine H1-ReceptorHydroxyzine inhibits carbachol (10 μM)-induced serotonin release by 34% at 10 μM, by 25% 1 μM and by 17% 0.1 μM in pretreated bladder slices for 60 min [1]. Hydroxyzine (0.1 mM) treatment inhibits the progression and severity of EAE by 50% and the extent of mast cell degranulation by 70% in Lewis rats with allergic encephalomyelitis (EAE) [2]. Hydroxyzine (500 M) significantly increases transport of etoposide to the serosal site in the jejunal everted sacs. Hydroxyzine significantly reduces the efflux and approximately 2.4 g/mL of etoposide in the jejunum and ileum. Hydroxyzine (0.2 μg/mL) significantly enhances the efflux of RH123 to the lumen [3].Hydroxyzine (500 μM) significantly decreases the steady-state etoposide concentration 2-fold, where the steady-state concentration reached about 0.055 μM/mL in Sprague-Dawley rats [3]. Hydroxyzine (12.5 mg/kg, 25 mg/kg and 50 mg/kg i.p.) shows little direct analgesic activity but markedly potentiates only the effect of morphine on the vocalization after-discharge which represents the affective component of pain in rats. Hydroxyzine (50 mg/kg i.p.) potentiates morphine on the tail-flick test, while Hydroxyzine (12.5 mg/kg i.p.) decreases morphine antinociception in rats [4].
Flunarizine is a potent dual Na+/Ca2+ channel (T-type) blocker. Flunarizine is a D2 dopamine receptor antagonist. Flunarizine shows anticonvulsive and antimigraine activity, and peripheral vasodilator effects[1][2][3][4][5].
Alniditan is a potent 5-HT1B/1D receptors agonist, with IC50 of 1.7 and 1.3 nM in HEK 293 cells, and pKi value of 8.96 and 9.40 for 5-HT1B/1D receptors, respectively.
MK 0893 is a potent, selective glucagon receptor antagonist with IC50 of 6.6 nM, and > 200 fold selectivity against GIPR, PAC1, GLP-1R, VPAC1 and VPAC2.
Bunitrolol is a beta-adrenergic antagonist. Bunitrolol has intrinsic sympathomimetic activity. Bunitrolol can be used for the research of ischemic myocardium[1].
ZT 52656A is a selective kappa opioid agonist, used for the prevention or alleviation of pain in the eye.
Dobutamine tartrate is a synthetic catecholamine that acts on α1-AR, β1-AR, β2-AR (α-1, β-1 andβ-2 adrenoceptors). Dobutamine tartrate is a selective β1-AR agonist, relatively weak activity at α1-AR and β2-AR. Dobutamine tartrate can increase cardiac output and correct hypoperfusion[1][2][3][4].
Bremelanotide Acetate is a melanocortin agonist.IC50 value:Target: melanocortinin vivo: Bremelanotide is a novel drug candidate for the treatment of male and female sexual dysfunction. Bremelanotide has shown promise in effectively treating erectile dysfunction (ED) without the cardiovascular effects found in ED drugs currently available. Bremelanotide works through a mechanism of action involving the central nervous system rather than directly on the vascular system. As a result, it may offer significant safety and efficacy benefits over currently available products.
Elinzanetant is a neurokinin receptors antagonist used for the research of Schizophrenia[1].
MF498 is a novel and selective E prostanoid receptor 4 (EP4 receptor) antagonist, displayed strong binding affinity for the EP4 receptor with Ki of 0.7 nM.Ki value: 0.7 nMTarget: EP4 receptorin vitro: MF498 also displays a relatively good selectivity over other prostanoid receptors, does not compromise the mucosal integrity in the gastrointestinal tract.MF498 inhibits PGE2-stimulated cAMP accumulation in a dose-dependent manner with IC50 values of 1.7 and 17 nM in the absence and presence of 10% serum, respectively. in vivo: MF498 relieves joint inflammation and pain in rodent models of rheumatoid and osteoarthritis. MF498 on inflammation in adjuvant-induced arthritis (AIA), a rat model for rheumatoid arthritis (RA), and joint pain in a guinea pig model of iodoacetate-induced osteoarthritis (OA).
MDA 19 is a selective human CB2 receptor agonist with Ki of 43.3 nM. IC50 Value: 43.3 nM(Ki)Target: CB2 receptorin vitro: MDA19 displayed 4-fold-higher affinity at the human CB(2) than at the human CB1 receptor (K(i) = 43.3 +/- 10.3 vs 162.4 +/- 7.6 nM) and nearly 70-fold-higher affinity at the rat CB2 than at the rat CB1 receptor (K(i) = 16.3 +/- 2.1 vs 1130 +/- 574 nM). In guanosine triphosphate (GTP)gamma[(35)S] functional assays, MDA19 behaved as an agonist at the human CB1 and CB2 receptors and at the rat CB1 receptor but as an inverse agonist at the rat CB2 receptor. In 3',5'-cyclic adenosine monophosphate (cAMP) assays, MDA19 behaved as an agonist at the rat CB1 receptor and exhibited no functional activity at the rat CB(2) receptor. In extracellular signal-regulated kinases 1 and 2 activation assays, in vivo: MDA19 behaved as an agonist at the rat CB2 receptor. MDA19 attenuated tactile allodynia produced by spinal nerve ligation or paclitaxel in a dose-related manner in rats and CB2(+/+) mice but not in CB2(-/-) mice, indicating that CB2 receptors mediated the effects of MDA19. MDA19 did not affect rat locomotor activity.
β2AR agonist /M-receptor antagonist-1 is a potent dual muscarinic antagonist/beta 2 agonist (MABA). β2AR agonist /M-receptor antagonist-1 potently relaxes either Carbachol (HY-B1208)-induced contraction, in the absence (MABA) or presence of Propranolol (M3; HY-B1208), or Histamine (HY-B1204)-induced contraction (β2)[1][2].
Tyr-Gly-Gly-Phe-Met-OH regulates human immune function and inhibits tumor growth via binding to the opioid receptor.
Mesyl Salvinorin B is a potent and selective kappa opioid receptor (KOP-r) agonist. Mesyl Salvinorin B prevents the ADE (Alcohol deprivation effect) in mice. Mesyl Salvinorin B dose-dependently reduces alcohol intake and preference in CED (chronic escalation drinking) mice[1][2].
6-Iodopravadoline (AM630) is a selective CB2 antagonist with Ki of 31.2 nM, and displays 165-fold selectivity over CB1 receptors.
ATL-801, an A2B receptor selective antagonist, ameliorates murine colitis[1].
MRS2578 is a potent P2Y6 receptor antagonist with IC50 of 37 nM, exhibits insignificant activity at P2Y1, P2Y2, P2Y4,and P2Y11 receptors.IC50 value: 37 nM [1]Target: P2Y6 receptorin vitro: MRS2578 selectively blocks P2Y6 receptor activity versus activity at P2Y1, P2Y2, P2Y4 or P2Y11 receptors. MRS2578 (1 μM) completely blocks the protection by UDP undergoing TNFalpha-induced apoptosis in 1321N1 astrocytoma cells [1]. MRS 2578 inhibits basal NF-κB activity in time and dose dependent manner in HMEC-1 cells transfected with 0.25 μg NF-κB promoter reporter. MRS 2578 (10 μM) completely abolishes TNF-α induced NF-κB reporter activity in HMEC-1 cells. MRS 2578 (10 μM) significant reduces TNF-α–induced proinflammatory gene expression in HMEC-1 cells [2]. MRS2578-treated mice shows reduced bronchial hyperresponsiveness toward methacholine in OVA-sensitized mice. MRS2578 completely blocks UDP-induced the release of IL-6, KC, and IL-8 in lung epithelial cells [3]. in vivo: MRS 2578 (10 μM) attenuates Keratinocyte-derived chemokine serum protein levels in LPS-induced vascular inflammation in C57BL/6 mice [2]. MRS2578 (10 μM, intratracheally) reduces BALF eosinophilia and the levels of IL-5 and IL-13 in the BALF in OVA-sensitized mice and leads to a markedly attenuated change in methacholine responsiveness after OVA challenge. MRS2578 (10 μM, intratracheally) inhibits house dust mite–induced allergic airway inflammation in OVA-sensitized mice. MRS2578 (10 μM, intratracheally) reduces of IL-6 and KC levels in BALF in OVA-sensitized mice [4].