Guvacine hydrochloride is an alkaloid from the nut of Areca catechu, acts as an inhibitor of GABA transporter, and dispalys modest selectivity for cloned GABA transporters with IC50s of 14 μM (human GAT-1), 39 μM (rat GAT-1), 58 μM (rat GAT-2), 119 μM (human GAT-3), 378 μM (rat GAT-3), and 1870 μM (human BGT-3).
Nardosinonediol (Tetrahydronardosinon) is a serotonin transporter (SERT) inhibitor[1].
Guvacine, an alkaloid found in the nut of Areca catechu, is a potent GABA uptakp inhibitor. Guvacine inhibits rat GAT-1, rat GAT-2 and rat GAT-3 with IC50 values of 39 μM, 58 μM and 378 μM, respectively[1].
Chikusetsusaponin Ib has anti-Alzheimer's disease activity and is a potent AChE inhibitor[1].
GL189 is a β-secretase inhibitor. GL189 has neuroprotective effect, and can be used for research of neurodegenerative diseases[1].
Desmethyl cariprazine is an active metabolite of Cariprazine[1]. Cariprazine, an antipsychotic drug candidate, exhibits high affinity for the D3 (Ki=0.085 nM) and D2 (0.49 nM) receptors, and moderate affinity for the 5-HT1A receptor (2.6 nM)[2].
Dihydrowithaferin A (2, 3-dihydrowithaferin A) is a withanolide isolated from Withania somnifera. Dihydrowithaferin A is active against acetylcholinesterase (AChE)[1].
ABT-107 is a potent and selective α7 nAChR agonist with Ki of 0.2-0.6 nM for rat or human cortex α7 nAChRs; displays >100-fold selective versus non-α7 nAChRs and other receptors; potently evokes human and rat α7 nAChR current responses in oocytes (EC50=50-90 nM) enhanced by A-867744; reduces spinal tau hyperphosphorylation in tau/amyloid precursor protein transgenic AD mice; improves cognition in monkey. Alzheimer Disease Phase 2 Discontinued
Benzomalvin B is the less active analogs of Benzomalvin A. Benzomalvin B is weakly active against substance P[1].
Tropanserin is a serotoninergic active compound, as well as a 5HT3 receptor antagonist. Tropanserin modulates Cardio-respiratory reflex effects of an exogenous serotonin challenge[1].
ONC206 is an analogue of TRAIL inducer ONC201[1]. ONC206 is a selective antagonist of the D2-like dopamine receptors (DRD2/3/4) at nanomolar concentrations. ONC206 has broad-spectrum anti-tumor activity[2].
Pipazethate (SKF 70230A), a pyridobenzothiazine derivative, is a potent GABA antagonist. Pipazethate has antitussive activity. Pipazethate can be used in research in cough supressant[1].
Cabergoline-d6 is deuterium labeled Cabergoline. Cabergoline is an ergot derived-dopamine D2-like receptor agonist that has high affinity for D2, D3, and 5-HT2B receptors (Ki=0.7, 1.5, and 1.2, respectively).
Dehydro Palonosetron (RS 42358-197) is a potent, seslective and orally active 5-HT3 receptor antagonist. Dehydro Palonosetron has no effect on the activities of 5-HT1 receptors, 5-HT2 receptors or 5-HT4 receptors[1].
GlyT1 Inhibitor 1 is a potent and selective GlyT1 inhibitor with an IC50 of 38 nM for rGlyT1[1]. Antipsychotic activity[1].
[D-Trp2,7,9] Substance P is a tachykinin (Neurokinin Receptor) antagonist with Ki values of 1 μM, 1.3 μM, and ~9 μM for NK-1, NK-2,and NK-3 receptor, respectively[1].
N-p-trans-Coumaroyltyramine is a cinnamoylphenethyl amide isolated from polygonum hyrcanicum, acts as an acetylcholinesterase (AChE) inhibitor with an an IC50 of 122 μM. N-p-trans-Coumaroyltyramine exhibits anti-trypanosomal activity with an IC50 of 13.3 µM for T. brucei rhodesiense[1][2].
SB 243213 hydrochloride is an orally active, selective and high-affinity 5-hydroxytryptamine (5-HT)2C receptor antagonist with a pKi of 9.37 and a pKb of 9.8 for human 5-HT2C receptor. SB 243213 hydrochloride has improved anxiolytic profile and has the potential for schizophrenia and motor disorders[1].
Homatropine Methylbromide is muscarinic AChR antagonist, inhibits endothelial and smooth muscle muscarinic receptors of WKY-E and SHR-E with IC50 of 162.5 nM and 170.3 nM, respectively.target： mAChRIC 50: WKY-E(162.5 nM), SHR-E(170.4nM )In vitro: Homatropine (20 μM) alone produces a dose ratio of 259 in atrium from guinea-pigs. Homatropine (20 μM) produces a dose ratio of only 95.0 when combined with hexamethonium in atrium from guinea-pigs.In vivo: : Pre-treatment with homatropine (20 mg/kg) was comparable with atropine (10 mg/kg) in preventing lethality in this rat model of acute OC poisoning. All rats pre-treated with normal saline, atropine 5 mg/kg, and homatropine 10 mg/kg died. Survival in the homatropine (20 mg/kg) and atropine (10 mg/kg) groups was 30% and 40% respectively.
Granisetron Hcl(BRL 43694A) is a serotonin 5-HT3 receptor antagonist used as an antiemetic to treat nausea and vomiting following chemotherapy.IC50 Value: 17uM (GR reduced 5-HT-evoked contractions) [1]Target: 5-HT3 receptorin vitro: In rat forestomach GR reduced 5-HT-evoked contractions at IC50 17 /- 6 uM. In isolated rabbit heart, GR 0.003-0.03 nM dose-dependently reduced s-HT tachycardia; at high levels GR reduced submaximal and maximal responses to 5-HT [1].in vivo: Leukocyte accumulation was dose-dependently inhibited by granisetron both at 6 and 72 h after induction of inflammation. Granisetron increased PGE(2) level at a lower dose (50 microg/pouch) but higher doses (100 and 200 microg/pouch) inhibited the release. At the same time, TNFalpha production was decreased by the lower dose and increased by higher doses of granisetron in a reciprocal fashion [2]. The GTDS displayed non-inferiority to oral granisetron: complete control was achieved by 60% of patients in the GTDS group, and 65% in the oral granisetron group (treatment difference, -5%; 95% confidence interval, -13-3). Both treatments were well tolerated, the most common adverse event being constipation [3].Clinical trial: Effect of External Heat on a Transdermal Granisetron Patch in Pharmacokinetics (PK) of Healthy Subjects. Phase 1
NK1 receptor antagonist 2 is a NK1 receptor antagonist. NK1 receptor antagonist 2 can be used for the research of tinnitus and hearing loss[1].
Venlafaxine hydrochloride is an antidepressant of the serotonin-norepinephrine reuptake inhibitor (SNRI) class.Target: SNRIVenlafaxine is an antidepressant of the serotonin-norepinephrine reuptake inhibitor (SNRI) class. First introduced by Wyeth in 1993, now marketed by Pfizer, it is licensed for the treatment of major depressive disorder (MDD), as a treatment for generalized anxiety disorder, and comorbid indications in certain anxiety disorders with depression. In 2007, venlafaxine was the sixth most commonly prescribed antidepressant on the U.S. retail market, with 17.2 million prescriptions.Venlafaxine is a bicyclic antidepressant, and usually categorized as a serotonin-norepinephrine reuptake inhibitor (SNRI), but it has been referred to as a serotonin-norepinephrine-dopamine reuptake inhibitor (SNDRI). It works by blocking the transporter "reuptake" proteins for key neurotransmitters affecting mood, thereby leaving more active neurotransmitters in the synapse. The neurotransmitters affected are serotonin and norepinephrine. Additionally, in high doses it weakly inhibits the reuptake of dopamine, with recent evidence showing that the norepinephrine transporter also transports some dopamine as well, since dopamine is inactivated by norepinephrine reuptake in the frontal cortex. The frontal cortex largely lacks dopamine transporters; therefore, venlafaxine can increase dopamine neurotransmission in this part of the brain. Venlafaxine interacts with opioid receptors (mu-, kappa1- kappa3- and delta-opioid receptor subtypes) as well as the alpha2-adrenergic receptor, and was shown to increase pain threshold in mice. When mice were tested with a hotplate analgesia meter (to measure pain), both venlafaxine and mirtazapine induced a dose-dependent, naloxone-reversible antinociceptive effect following intraperitoneal injection. These findings suggest venlafaxine's seemingly superior efficacy in severe depression as narcotics become increasingly used as a measure of last resort for refractory cases.
Linarin (Buddleoside), isolated from the flower extract of Mentha arvensis, shows selective dose dependent inhibitory effect on acetylcholinesterase (AChE)[1].
WAY 163909 is a potent and selective 5-HT(2C) receptor agonist with a Ki of 10.5±1.1 nM.
Bemesetron (MDL 72222) is a selective 5-HT3 receptor antagonist with an IC50 of 0.33 nM[1]. Neuroprotective effects[2].
Valerenic acid ((-)-Valerenic Acid), a sesquiterpenoid, is an orally active positive allosteric modulator of GABAA receptors. Valerenic acid is also a partial agonist of the 5-HT5a receptor. Valerenic acid mediates anxiolytic activity via GABAA receptors containing the β3 subunit. Valerenic acid also exhibits potent antioxidant properties[1][2][3].
Atracurium Besylate is a neuromuscular blocking agent with ED95 of 0.2 mg/kg. Target: nAChRAtracurium besylate is a neuromuscular-blocking drug or skeletal muscle relaxant in the category of non-depolarizing neuromuscular-blocking drugs, used adjunctively in anesthesia to facilitate endotracheal intubation and to provide skeletal muscle relaxation during surgery or mechanical ventilation. Atracurium is classified as an intermediate-duration non-depolarizing neuromuscular-blocking agent [1]. A 14C radiolabeled metabolism study in cats confirmed the lack of hepatic or renal involvement in the metabolism of atracurium: radioactivity eliminated in bile and urine was predominantly from metabolites rather than the unchanged parent drug [2].
MCOPPB is an orally active and selective agonist of Nociceptin/Orphanin FQ–Receptor. MCOPPB inhibits signaling through the NOP receptor in the mouse brain. MCOPPB is used in anxiety disorders research[1].
H-Ser-Tyr-OH is a dipeptide consisting of glutamic acid, glycine and histidine. H-Ser-Tyr-OH can form a copper(II) complex with copper ions to form a strong free radical scavenging activity. H-Ser-Tyr-OH also increases the intracellular uptake of the delta opioid receptor ligand deltorphin[1].
ZK 93423 is a potent benzodiazepine GABAA receptor agonist with a certain cooling effect on rodents[1].