Glycopyrrolate(Glycopyrronium Br) is a muscarinic competitive antagonist used as an antispasmodic.IC50 Value:Target: mAChR (Muscarinic acetylcholine receptor M1)in vitro: Glycopyrrolate showed no selectivity in its binding to the M1-M3 receptors. Kinetics studies, however, showed that glycopyrrolate dissociates slowly from HASM muscarinic receptors (60% protection against [3H]-NMS binding at 30 nM) compared to ipratropium bromide [1].in vivo: Glycopyrrolate (1 mg) tablets were then administered, starting with one tablet daily the third week and increasing the daily dose by one tablet per week until a maximum of four tablets during week six and 4 days of week seven when the daily dose was reduced to two tablets for 3 days. glycopyrrolate can be given in controlled doses provided that an adequate medical assessment has been undertaken [2]. Glycopyrrolate has a slow and erratic absorption from the gastrointestinal system, but even low plasma levels are associated with a distinct and long-lasting antisialogic effect [3]. Oral glycopyrrolate is emerging as a potential second-line treatment option, but experience with safety, efficacy, and dosing is especially limited in children [4]. phase III study, 52.3% of glycopyrrolate oral solution recipients (aged 3-18 years; n = 137) had an mTDS response (primary endpoint); the response rate was consistently above 50% at all 4-weekly timepoints, aside from the first assessment at week 4 (40.3%). In general, glycopyrrolate oral solution was well tolerated in clinical trials. The majority of adverse events were within expectations as characteristic anticholinergic outcomes [5].Toxicity: Side effects include dry mouth, difficult urinating, heachaches, diarrhea and constipation. The medication also induces drowsiness or blurred vision. LD50=709 mg/kg (rat, oral).
Sigma-2 Radioligand 1 (compound 1) is a Sigma-2 selective ligand. Sigma-2 Radioligand 1 has good biodistribution in mice and good in vivo activity in rats. [18F] Modified Sigma-2 Radioligand 1 for visualization of tumors in micro-PET/CT imaging, exhibiting high tumor uptake and tumor-to-background ratio. Experiments show that Sigma-2 Radioligand 1 binds highly specifically in U87MG glioma xenografts[1].
[D-Ala2]-Met-Enkephalin, an opioid peptide, is a potent opioid agonist. [D-Ala2]-Met-Enkephalin inhibits ACh-induced and suckling-induced oxytocin (OT) release[1][2].
Pomaglumetad methionil (LY2140023 hydrate) is an oral methionine prodrug of the potent specific mGlu2/3 receptor agonist LY404039 (HY-50906). Pomaglumetad methionil is well-tolerated and has a distinct safety profile, and can be used to treat schizophrenia[1][2].
Prenalterol is a selective β1-adrenergic receptor agonist. Prenalterol has no effect on gut smooth muscle contractile activity. Prenalterol can be used for researching cardiovascular disease[1].
Arecoline Hydrobromide is a muscarinic acetylcholine receptor agonist. Target: mAChRArecoline is an alkaloid found in the areca nut. Arecoline. a drug obtained from the Areca Catechu L., induced a dose-dependent antinociception (0.3-1 mg kg(-1) i.p.) which was prevented by the muscarinic antagonists pirenzepine (0.1 microg per mouse i.c.v.) and S-(-)-ET-126 (0.01 microg per mouse i.c.v.) [1]. Arecoline exerts its excitatory actions by binding to M2-muscarinic receptors on the cell membrane of neurons of the locus coeruleus [2]. Arecoline (1 nM - 1 microM) produced a concentration-dependent contraction in both the longitudinal and the circular smooth muscle of rabbit colon. Atropine (10 microM) abolished the arecoline (80 nM)--induced contraction. M3 receptor antagonist, 4 - DAMP (0.4 microM), abolished the arecoline (80 nM)--related response, whereas M2 receptor antagonist, gallamine (0.4 microM), did not affect the effect of arecoline. These results suggest that arecoline excites the colonic motility via M3 receptor in rabbits [3].
CGP 20712 dihydrochloride is an antagonist of β 3-adrenoceptor. CGP 20712 dihydrochloride inhibits isoproterenol with the IC50 of 79 μM[1].
Naloxone D5 is deuterium labeled Naloxone. Naloxone is a a potent opioid receptor antagonist.
Dexamethasone acetate is a glucocorticoid receptor agonist.
SDZ NKT 343 is a selective, orally active NK1 receptor antagonist with an IC50 of 0.62 nM against human NK1 receptor. SDZ NKT 343 has good analgesic activity[1][2].
OXA(17-33) is a potent and selective orexin-1 receptor (OX1) agonist. OXA(17-33) shows a ∼23-fold selectivity for the OX1 (EC50=8.29 nM) over OX2 (187 nM)[1].
Metoclopramide-d3 is deuterium labeled Metoclopramide. Metoclopramide is a potent antagonist of 5-HT3 and dopamine D2 receptor, with IC50s of 308 nM and 483 nM, respectively. Metoclopramide can be used for the research of nausea and vomiting, gastro-oesophageal reflux, and gastroparesis[1][2].
EP3 antagonist 4 (Compound 28) is an EP3 antagonist, with a Ki value of 2 nM for hEP. EP3 antagonist 4 shows low in vivo clearance, high oral AUC, and good bioavailability in the rat full PK studies. EP3 antagonist 4 can be used for research of beta cell dysfunction in diabetes[1].
(-)-Isodocarpin (Isodocarpin), a diterpenoid, is a potent melanogenesis inhibitor with an IC50 of 0.19 μM in B16 4A5 cells. (-)-Isodocarpin inhibits the expression of tyrosinase, tyrosine-related protein (TRP)-1, and TRP-2 mRNA[1].
Calhex 231 hydrochloride is a CaSR inhibitor via negative allosteric modulation. Calhex 231 hydrochloride blocks Ca2+-induced accumulation of [3H]inositol phosphate with an IC50 of 0.39 μM in HEK293 cells. Calhex 231 hydrochloride has the potential for diabetic cardiomyopathy (DCM) treatment[1][2].
(Rac)-5-Hydroxymethyl Tolterodine ((Rac)-Desfesoterodine) hydrochloride, an active metabolite of Tolterodine, is a mAChR antagonist (Ki values of 2.3 nM, 2 nM, 2.5 nM, 2.8 nM, and 2.9 nM for M1, M2, M3, M4, and M5 receptors, respectively). (Rac)-5-Hydroxymethyl Tolterodine hydrochloride can be used for overactive bladder research[1].
Saralasin ([Sar1,Ala8] Angiotensin II) acetate hydrate is an octapeptide analog of angiotensin II. Saralasin acetate hydrate is a competitive angiotensin II receptor antagonist with a Ki value of 0.32 nM for 74% of the binding sites, and has partial agonist activity as well. Saralasin acetate hydrate can be used for the research of renovascular hypertension, renin-dependent (angiotensinogenic) hypertension[1][3][6].
Nalmefene is a long acting opioid (MOR and DOR antagonist), and a partial KOR agonist. Nalmefene is used for opioid overdose and alcohol dependence[1].
SCH 546738 is a novel, potent and non-competitive CXCR3 antagonist, the affinity constant (Ki) of SCH 546738 binding to human CXCR3 receptor is determined to be 0.4 nM in multiple experiments.
VU0155041 is a potent, selective and mixed allosteric agonist/positive allosteric modulator (PAM) of mGluR4, with EC50s of 798 nM and 693 nM for human and rat mGluR4, respectively. VU0155041 is a partial agonist of mGluR4 that activates the receptor by interacting with a site that is distinct from the glutamate binding site[1].
Ramelteon-d5 is deuterium labeled Ramelteon. Ramelteon is a potent, highly selective, and orally active agonist of MT1/MT2 with Ki values of 14 and 112 pM, respectively. Ramelteon has the potential for the research of insomnia. Ramelteon consistently reduces sleep onset after long-term treatment, with no next-morning residual effects or rebound insomnia or withdrawal symptoms upon discontinuation[1][2].
A potent, selective and orally available CGRP receptor antagonist for the prevention of migraine. Migraine Phase 3 Clinical
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].
LM-1484 is an antagonist of CysLT1 receptor and displays a higher affinity for 3H-LTC4 sites.
AZD9567 (compound 15) is a potent, selective and oral active non-steroidal glucocorticoid receptor modulator (SGRM), with an IC50 of 3.8 nM. Exhibits excellent efficacy in the streptococcal cell wall (SCW) reactivation model of joint inflammation[1].
DPDPE, an opioid peptide, is a selective δ-opioid receptor (DOR) agonist with anticonvulsant effects[1].
Salbutamol is a short-acting β2-adrenergic receptor agonist used for the relief of bronchospasm in conditions such as asthma and chronic obstructive pulmonary disease (COPD).
GPR40 agonist 5 (compound I-14) is an orally active and potent GPR40 (G protein coupled receptor 40) agonist, with an EC50 of 47 nM. GPR40 agonist 5 decreases the levels of blood glucose and improves the glucose tolerance. GPR40 agonist 5 has sufficient effectiveness for the control of hyperglycemia state in type 2 diabetic mice[1].
Dagrocorat (PF-00251802) hydrochloride is an orally active and selective high-affinity partial agonist of the glucocorticoid receptor. Dagrocorat hydrochloride is also a time-dependent reversible inhibitor of CYP3A (IC50=1.3 μM in human liver microsomes) and CYP2D6 (Ki=0.57 μM in human liver microsomes). Dagrocorat hydrochloride can be used for the research of rheumatoid arthritis[1].
AChE-IN-14 is a potent cholinesterase inhibitor with IC50s of 0.46 , 0.48, and 0.44 μM for electric eel acetylcholinesterase (eeAChE), human recombinant acetylcholinesterase (hAChE), and equine serum butyrylcholinesterase (eqBuChE), respectively. AChE-IN-14 exhibits high affinity toward human H3 receptor (H3R; Ki= 159.8 nM). AChE-IN-14 can be used for the research of Alzheimer’s disease[1].