PD 168568 dihydrochloride is an orally active and selective D4 dopamine receptor antagonist, with a Ki of 8.8 nM[1].
2-Iodomelatonin is a potent agonist of melatonin receptor 1 (MT1) with a Ki value of 28 pM, it is more 5-fold selective for MT1 over MT2[1]. 2-iodomelatonin can be used to identify, characterize and localize melatonin binding sites in the brain and peripheral tissues[1].
L-(-)-α-Methyldopa hydrate is an alpha-adrenergic agonist (selective for α2-adrenergic receptors) psychoactive drug used as a sympatholytic or antihypertensive.Target: alpha-adrenergic agonistMethyldopa is an alpha-adrenergic agonist (selective for α2-adrenergic receptors) psychoactive drug used as a sympatholytic or antihypertensive. Its use is now mostly deprecated following the introduction of alternative safer classes of agents. However, it continues to have a role in otherwise difficult to treat hypertension and gestational hypertension (also known as pregnancy-induced hypertension (PIH)).Methyldopa has a dual mechanism of action. It is a competitive inhibitor of the enzyme DOPA decarboxylase, also known as aromatic L-amino acid decarboxylase, which converts L-DOPA into dopamine. Dopamine is a precursor for norepinephrine (noradrenaline) and subsequently epinephrine (adrenaline). This inhibition results in reduced dopaminergic and adrenergic neurotransmission in the peripheral nervous system. This effect may lower blood pressure and cause central nervous system effects such as depression, anxiety, apathy, anhedonia, and parkinsonism. It is converted to α-methylnorepinephrine by dopamine beta-hydroxylase (DBH). α-methylnorepinephrine is an agonist of presynaptic central nervous system α2-adrenergic receptors. Activation of these receptors in the brainstem appears to inhibit sympathetic nervous system output and lower blood pressure. This is also the mechanism of action of clonidine.
Tetrahydrozoline (Tetryzoline) nitrate , a derivative of imidazoline, is an α-adrenergic agonist that causes vasoconstriction. Tetrahydrozoline is widely used for the research of nasal congestion and conjunctival congestion[1][2].
[bAla8]-Neurokinin A(4-10) is a neurokinin 2 (NK2) receptor agonist.
N-Demethyl MK-6884 (compound 34) is a potent M4 mAChR allosteric modulator. N-Demethyl MK-6884 can be used in the studies of alzheimer's disease and other diseases mediated by the M4 mAChR[1].
Balixafortide (POL6326) is a potent, selective, well-tolerated peptidic CXCR4 antagonist with an IC50 < 10 nM. Balixafortide shows 1000-fold selective for CXCR4 than a large panel of receptors including CXCR7. Balixafortide blocks β-arrestin recruitment and calcium flux with IC50s < 10 nM. Balixafortide is also a potent hematopoietic stem and progenitor cell (HSPC) mobilizing agent. Anti-cancer effects[1][2].
Montelukast (MK0476) dicyclohexylamine is a potent, selective and orally active antagonist of cysteinyl leukotriene receptor 1 (CysLT1). Montelukast dicyclohexylamine can be used for the reseach of asthma and liver injury. Montelukast dicyclohexylamine also has an antioxidant effect in intestinal ischemia-reperfusion injury, and could reduce cardiac damage. Montelukast dicyclohexylamine decreases eosinophil infiltration into the asthmatic airways. Montelukast dicyclohexylamine can also be used for COVID-19 research[1][2][3][4].
SCH-202676 is an allosteric modulator of G protein-coupled receptors (GPCRs) and adenosine receptor (AR). SCH-202676 has antiviral activity and inhibits 3CLpro in a time-dependent manner with an IC50 value of 0.655 µM[1][2][3][4].
Pexacerfont is a selective corticotropin-releasing factor (CRF1) receptor antagonist with IC50 of 6.1±0.6 nM for human CRF1 receptor.
JDTic is a highly selective antagonist for the κ-opioid receptor; without affecting the μ- or δ-opioid receptors. IC50 value:Target: κ-opioid receptorJDTic is a 4-phenylpiperidine derivative, distantly structurally related to analgesic drugs such as meperidine and ketobemidone, and more closely to the mu opioid antagonist alvimopan, and is structurally distinct from other kappa antagonists such as norbinaltorphimine. JDTic has a very long duration of action, with effects in animals seen for up to several weeks after administration of a single dose, although its binding to the kappa opioid receptor is not irreversible and its long-acting effects are instead caused by altered activity of c-Jun N-terminal kinases. Animal studies suggest that it may produce antidepressant and anxiolytic effects, as well as having possible application in the treatment of addiction to cocaine and morphine.
Tecadenoson (CVT-510) is a selective A1 adenosine receptor agonist.
Norisoboldine is an isoquinoline alkaloid which acts as an AhR agonist, and enhances the function of the adenosine A1 receptor.
MRS1177 is a potent and selective human Adenosine A3 receptor (hA3AR) antagonist, with a Ki of 0.3 nM.
AH 6809 is an EP and DP receptor antagonist with nearly equal affinity for the cloned human EP1, EP2, EP3-III, and DP1 receptors.IC50 Value: ~3 nM (EC50 for calcium mobilization by PGE2) [1]Target: EP/DP receptorin vitro: AH6809also antagonized the aggregatory effect of U-46619 in whole blood (pA2 = 4.45). However, concentrations of AH6809 up to 300 microM were without effect upon either ADP- or platelet activating factor (Paf)-induced aggregation (pA2 less than 3.5) [2]. Preincubation of control cells in 10(-4) M concentrations of AH6809 inhibited PGE2-induced activation of AC by greater than 80% without significant (P greater than .05) inhibition of basal activity by the antagonist [3].in vivo: Exposure to a selective COX-2 inhibitor (SC58125) or an EP1/EP2 antagonist (AH6809), but not an EP4 antagonist (AH23848B), significantly reduced cell proliferation of esophageal explants in 24 hour-organ culture experiments [4]. Oral administration of the EP1 receptor antagonist, AH6809 (10 mg/kg/day, for 4 days), significantly reduced the systolic blood pressure in db/db, but not in control mice [5].
PB28 is a cyclohexylpiperazine derivative and a high affinity and selective sigma 2 (σ2) receptor agonist with a Ki of 0.68 nM. PB28 is also a σ1 antagonist with a Ki of 0.38 nM. PB28 is less affinity for other receptors. PB28 inhibits electrically evoked twitch in guinea pig bladder and ileum with EC50 values of 2.62 μM and 3.96 μM, respectively. PB28 can modulate SARS-CoV-2-human protein-protein interaction. PB28 induces caspase-independent apoptosis and has antitumor activity[1][2][3][4][5].
KRAS G12C inhibitor 49 (Compound 3-2M) is an orally active KRAS G12C inhibitor. KRAS G12C inhibitor 49 shows antitumor activity[1].
Bucindolol is a β1-adrenergic receptor blocker, with intrinsic sympathomimetic activity, used in the research of heart failure[1].
Quisqualic acid (L-Quisqualic acid), a natural analog of glutamate, is a potent and pan two subsets (iGluR and mGluR) of excitatory amino acid (EAA) agonist with an EC50 of 45 nM and a Ki of 10 nM for mGluR1R. Quisqualic acid is isolated from the fruits of Quisqualis chinensis[1][2].
SR59230A hydrochloride is a potent, selective, and blood-brain barrier penetrating β3-adrenergic receptor antagonist[1] with IC50s of 40, 408, and 648 nM for β3, β1, and β2 receptors, respectively[2].
SARS-CoV-2-IN-57 (compound (+)-R-26) is a potent inhibitor of SARS-CoV-2 (IC50: 80 nM). SARS-CoV-2-IN-57 has high affinity for Sigma Receptor with Kis of 13.6 nM (S1R) and 14.4 nM (S2R) respectively[1].
CCK-B Receptor Antagonist 2, compound 15b, is a potent and orally active Gastrin/CCK-B antagonist with an IC50 value of 0.43 nM. CCK-B Receptor Antagonist 2 also inhibits gastrin/CCK-A activity with an IC50 of 1.82 μM[1].
PIT (2,2'-Pyridylisatogen tosylate) is a selective and non-competitive antagonist of P2Y1 receptor with an IC50 value of 0.14 μM for human P2Y1 receptor. PIT antagonizes P2Y1 receptor signaling without affecting nucleotide binding. PIT is an irreversible antagonist of responses to ATP at metabotropic purinoceptors (of the P2Y family) in some smooth muscles. PIT can be used for the research of chronic bronchitis and asthma[1][2][3].
LY2812223 is a highly potent, functionally selective mGlu2 receptor agonist with mGlu2 binding affinity for mGlu2 and mGlu2 (Ki=144 nM and 156 nM, respectively)[1].
J-2156 TFA is a high potent, selective somatostatin receptor type 4 (SST4 receptor) agonist with IC50s of 0.05 nM and 0.07 nM for human and rat SST4 receptors, respectively. J-2156 TFA is used for the relief of mechanical allodynia and mechanical hyperalgesia in the ipsilateral hindpaws in rats[1][2].
PDC31 (THG113.31; ILGHXDYK) is an allosteric and non-competitive inhibitor of FP Prostaglandin Receptor. PDC31 is the D-amino acid-based oligopeptide, is used for smooth muscle contractile agent. PDC31 decreases the strength and duration of uterine contractions in vivo, which can be used for research of preterm labor and primary dysmenorrhea (PD). PDC31 also enhances Ca2+-dependent large-conductance K+-channel in human myometrial cells[1][2].
(S,S)-J-113397 is an isomer of J-113397 (HY-114072). J-113397 is an Opioid Receptor antagonist[1].
Salmeterol xinafoate is a long-acting beta-2 adrenergic receptor (β2AR) agonist, with Ki of 1.5 nM for WT β2AR, and used for asthma treatment.
Bunazosin is a potent and selective α1-adrenoceptor antagonist. Bunazosin can be used for antihypertensive and ocular hypotensive research[1].
Naftopidil dihydrochloride (KT-611 dihydrochloride) is a selective alpha1-adrenoceptor antagonist, with antiproliferative effects. Naftopidil dihydrochloride can be used for the research of prostate hyperplasia[1].