Syk Inhibitor II dihydrochloride dihydrate is a potent, high selective and ATP-competitive Syk inhibitor with an IC50 of 41 nM. Syk Inhibitor II dihydrochloride dihydrate inhibits 5-HT release from RBL-cells with an IC50 of 460 nM. Syk Inhibitor II dihydrochloride dihydrate shows less potent against other kinases and has anti-allergic effect[1].
Velusetrag (TD-5108) is an orally active, potent and selective agonist of serotonin 5-HT4 receptor (5-HT4R), with a pKi of 7.7. Velusetrag exhibits no affinity (Ki>10 μM) for 5-HT2A and 5-HT2B receptors. Velusetrag can be used for the research of gastrointestinal diseases and Parkinson's disease[1][2][3][4][5].
A highly selective, potent, BBB penetrant and orally bioavailable 5-HT6R antagonist for the treatment of neurological disorders such as AD and schizophrenia; significantly restores both scopolamine- and MK-801-induced cognitive dysfunction and demonstrates antipsychotic potential. Alzheimer Disease Phase 2 Clinical
GR125487 sulfamate is an orally active and selective antagonist of 5-HT4R. GR125487 sulfamate effectively blocks the cognition enhancing effect. GR125487 sulfamate can be used to study memory disorders, gastrointestinal disorders, mood disorders and urinary tract dysfunction[1].
(R)-Praziquantel D11 is the deuterium labeled (R)-Praziquantel. (R)-Praziquantel, the active enantiomer of Praziquantel, is a partial agonist of the human 5-HT2B receptor. (R)-Praziquantel acts as an antischistosomal eutomer[1].
Setiptiline(Org-8282) is a serotonin receptor antagonist.IC 50 value:Target: 5-HT receptorSetiptiline is a tetracyclic antidepressant (TeCA) which acts as a noradrenergic and specific serotonergic antidepressant (NaSSA). Setiptiline acts as a norepinephrine reuptake inhibitor, α2-adrenergic receptor antagonist, and serotonin receptor antagonist, likely at the 5-HT2A, 5-HT2C, and/or 5-HT3 subtypes, as well as an H1 receptor inverse agonist/antihistamine. From Wikipedia.
Iferanserin (S-MPEC) is a selective 5-HT receptor (serotonin receptor) antagonist with an affinity for 5-HT2A receptor. Iferanserin has the potential for internal hemorrhoid disease treatment[1].
Nelotanserin is a potent 5-HT2A inverse agonist, a moderately potent 5-HT2C partial inverse agonist and a weak 5-HT2B inverse agonist, with IC50s of 1.7, 79, 791 nM in IP accumulation assays, respectively.
NAS181 is a potent and selective antagonist of rat 5-HT1B receptor, with a Ki of 47 nM. NAS181 shows 13-fold selectivity for r5-HT1B over bovine 5-HT1B receptor (Ki=630 nM). NAS181 increases the 5-HT turnover and the synaptic concentration of 5-HT by inhibiting terminal r5-HT1B autoreceptors[1][2].
(4E)-SUN9221 is a potent antagonist of α1-adrenergic receptor and 5-HT2 receptor, with antihypertensive and anti-platelet aggregation activities.
PZ-1190 is a multitarget ligand for serotonin and dopamine receptors with potential antipsychotic activity in rodents[1].
Ziprasidone D8 is deuterium labeled Ziprasidone, which is a combined 5-HT (serotonin) and dopamine receptor antagonist which exhibits potent effects of antipsychotic activity.
Peptide 401, a potent mast cell degranulating factor from bee venom, suppresses the increased vascular permeability due to intradermal injection of various smooth muscle spasmogens (histamine, and 5-HT).
WAY-100635 is a potent and selective 5-HT1A Receptor antagonist with a pIC50 of 8.87, an apparent pA2 of 9.71.
HY-101653 is a drug with multiple CNS targets, and inhibits acetylcholinesterase (AChE) with Ki of 69 μM; also active against muscarinic M1 and M2 receptors, serotonin 5HT4 receptors, and imidazole I2 receptors.
BRL 54443 is a potent 5-HT1E/1F receptor agonist (pKi values are 8.7 and 8.9 respectively); displays > 30-fold selectivity over other 5-HT and dopamine receptors.IC50 value: 8.7(pKi, 5-HT1E); 8.9 (pKi, 5-HT1F) Target: 5-HT1E/1F receptorin vitro: BRL 54443 is a potent 5-ht1E/1F receptor agonist (pEC50 values are 8.5 and 8.6 respectively). Displays > 30-fold selectivity over other 5-HT and dopamine receptors (pKi values are 8.7. 8.9, 7.2, 6.9, 7.2, 5.9, 7.0, 6.5, < 6, < 6, 6.3 and 6.2 for human 5-HT1E, 1F, 1A, 1B, 1D, 2A, 2B, 2C, 4, 7, D2 and D3 receptors respectively). Induces 5-HT2A receptor-mediated mouse aortic contraction in vitro (pEC50 = 6.52). Active in vivo. In DG membranes, BRL54443, a 5-ht(1E) /5-HT(1F) agonist, selectively stimulated 5-ht(1E) receptors and potently inhibited forskolin-dependent cAMP production (IC50 = 14 nM) [2]. The 5-HT(1E/1F) receptor agonist BRL 54443 also induced contraction (-log EC(50) = 6.52) [1].in vivo: Reduction of flinching was considered as antinociception. Ipsilateral, but not contralateral, peripheral administration of BRL54443 (5-HT(1E/1F); 3-300 microg/paw) significantly reduced formalin-induced flinching in rats [3].
(Rac)-Rotigotine (N-0437) is a racemate of Rotigotine. Rotigotine is a full agonist of?dopamine receptor, a partial agonist of the?5-HT1A receptor, and an antagonist of the?α2B-adrenergic receptor, with?Kis of 0.71?nM, 4-15?nM, and 83?nM for the dopamine D3 receptor and D2, D5, D4 receptors, and dopamine D1 receptor.
Dehydroaripiprazole (OPC-14857) hydrochloride is an active metabolite of Aripiprazole. Aripiprazole is an antipsychotic agent and is metabolized by CYP3A4 and CYP2D6 forming mainly Dehydroaripiprazole hydrochloride. Dehydroaripiprazole hydrochloride has with antipsychotic activity equivalent to Aripiprazole[1][2][3][4].
Zimelidine is a potent and selective inhibitor of serotonin 5-HT uptake and SERT. Zimelidine is an antidepressant[1][2][3][4].
Zotepine, an antipsychotic agent, is a potent antagonist of 5-HT2A, 5-HT2C, Histamine H1, α1-adrenergic and Dopamine D2 receptors, with Kds of 2.6 nM, 3.2 nM, 3.3 nM, 7.3 nM and 8 nM, respectively. Zotepine exhibits antidepressive and anxiolytic effects in vivo[1][2].
Pumosetrag Hydrochloride (MKC-733; DDP-733) is an orally available 5-HT3 partial agonist developed for the treatment of irritable bowel syndrome and gastroesophageal reflux disease.
4-Chloro-L-phenylalanine (L-PCPA) is a 5-HT biosynthesis inhibitor. 4-Chloro-L-phenylalanine is also a nonspecific antagonist of both isoforms of tryptophan hydroxylase (TPH1 and TPH2)[1].
Prucalopride succinate is a selective, high affinity 5-HT4 receptor agonist with pKi of 8.6/8.1 for 5-HT4a/4b.IC50 value:Target: 5-HT4 agonistin vitro: Prucalopride was a 5-HT(4) receptor agonist in the guinea-pig colon, as it induced contractions (pEC(50)=7.48+/-0.06; insensitive to a 5-HT(2A) or 5-HT(3) receptor antagonist, but inhibited by a 5-HT(4) receptor antagonist) as well as the facilitation of electrical stimulation-induced noncholinergic contractions (blocked by a 5-HT(4) receptor antagonist). Prucalopride did not cause relevant inhibition of 5-HT(2A), 5-HT(2B), or 5-HT(3), motilin or cholecystokinin (CCK(1)) receptor-mediated contractions, nor nicotinic or muscarinic acetylcholine receptor-mediated contractions, up to 10 microM [1].in vivo: Rat microdialysis studies revealed that prucalopride maximally increased ACh and histamine levels in the prefrontal cortex at 5 and 10 mg/kg, whereas PRX-03140 significantly increased cortical histamine levels at 50 mg/kg, failing to affect ACh release at doses lower than 150 mg/kg [2].
UCSF648 (Compound 5A6-48) is a chemical probe for the 5-HT5A serotonin receptor. UCSF648 weakly activates ADRA2A and MTNR1A[1].
Ondansetron(GR38032) is a serotonin 5-HT3 receptor antagonist used mainly as anantiemetic (to treat nausea and vomiting), often following chemotherapy.IC50 Value: Target: 5- HT3 Receptorin vitro: 5-HT evoked transient inward currents (EC50 = 3.4 microM; Hill coefficient = 1.8) that were blocked by the 5-HT3 receptor antagonist ondansetron (IC50 = 103 pM) [1]. The 5-HT3A receptor antagonist ondansetron (0.3 nM) reversibly inhibited the 5-HT (30 microM) signal by 70% and at 3 nM it abolished the response [2].in vivo: Acute ondansetron administration at the lowest dose (0.1 mg/kg, IP) tested had no effect, while other doses (0.33 and 1 mg/kg, IP) produced improvements in auditory gating [3]. Different doses of ondansetron were injected intraperitoneally (i.p.) at fixed times during the day to determine both the sublethal (TD50) and lethal (LD50) doses, which were, respectively, 3.7 +/- 0.6 mg/kg and 4.6 +/- 0.5 mg/kg [4]. ondansetron (0.25-1.0 mg/kg, subcutaneously) given before the challenge dose of ethanol (2.4 g/kg, intraperitoneally) injection, significantly and dose dependently attenuated the expression of sensitization. In addition, ondansetron (1.0 mg/kg, subcutaneously) given before ethanol injection on days 1, 4, 7, and 10 significantly blocked the development (days 1, 4, 7, and 10), and expression (day 15) of sensitization to the locomotor stimulant effect of ethanol injection [5]. Toxicity: Ondansetron may be safe in lower doses used to prevent nausea and vomiting in radiation treatment or postoperatively. However, as there is a report that a lower dose of ondansetron prolonged the QT interval in healthy volunteers, this needs to be clarified by the FDA [6].
MM 77 dihydrochloride is a potent postsynaptic antagonist of the 5-HT1A receptor. MM 77 dihydrochloride exhibits anxiolytic-like activity[1][2].
Mesembrine-d3 ((+)-Mesembrine-d3) is the deuterium labeled Mesembrine. Mesembrine ((+)-Mesembrine) a main alkaloid that features an aryloctahydroindole skeleton. Mesembrine is a 5-HT transporter inhibitor with a Ki of 1.4 nM. Mesembrine also inhibits phosphodiesterase 4B (PDE4B) with an IC50 of 7.8 μM[1][2].
(S)-Volinanserin is an isform of Volinanserin (HY-14940). Volinanserin is a potent and selective antagonist of 5-HT2 receptor, with a Ki of 0.36 nM, and shows 300-fold selectivity for 5-HT2 receptor over 5-HT1c, alpha-1 and DA D2 receptors. Volinanserin has antipsychotic activity.
MK-212 (CPP) is a centrally acting 5-HT1C/5-HT2 agonist. MK-212 can stimulate phosphoinositide hydrolysis in cerebral cortex[1].
Org-12962 is a potent, selective and orally active 5-HT2C receptor agonist with a pEC50 value of 7.01. Org-12962 also exhibits high effacy for the 5-HT2A and 5-HT2B receptor with pEC50s of 6.38 and 6.28, respectively[1][3].Org-12962 displays antiaversive effects in a rat model of panic-like anxiety[2].