L-745,870 trihydrochlorideHighly selective D4 antagonist CAS# 866021-03-6 |
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Quality Control & MSDS
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Chemical structure
3D structure
Cas No. | 866021-03-6 | SDF | Download SDF |
PubChem ID | 49759035 | Appearance | Powder |
Formula | C18H22Cl4N4 | M.Wt | 436.21 |
Type of Compound | N/A | Storage | Desiccate at -20°C |
Solubility | Soluble to 100 mM in water | ||
Chemical Name | 3-[[4-(4-chlorophenyl)piperazin-1-yl]methyl]-1H-pyrrolo[2,3-b]pyridine;trihydrochloride | ||
SMILES | C1CN(CCN1CC2=CNC3=C2C=CC=N3)C4=CC=C(C=C4)Cl.Cl.Cl.Cl | ||
Standard InChIKey | KJSOYZLYCFYXFC-UHFFFAOYSA-N | ||
Standard InChI | InChI=1S/C18H19ClN4.3ClH/c19-15-3-5-16(6-4-15)23-10-8-22(9-11-23)13-14-12-21-18-17(14)2-1-7-20-18;;;/h1-7,12H,8-11,13H2,(H,20,21);3*1H | ||
General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. |
Description | A highly potent and selective D4 dopamine receptor antagonist; L-745,870 has Ki values of 0.51, 2300 and 960 nM for D4, D3 and D2 subtypes respectively and > 1000-fold selectivity over 5-HT2, D1 and D5 receptors. |
L-745,870 trihydrochloride Dilution Calculator
L-745,870 trihydrochloride Molarity Calculator
1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
1 mM | 2.2925 mL | 11.4624 mL | 22.9247 mL | 45.8495 mL | 57.3118 mL |
5 mM | 0.4585 mL | 2.2925 mL | 4.5849 mL | 9.1699 mL | 11.4624 mL |
10 mM | 0.2292 mL | 1.1462 mL | 2.2925 mL | 4.5849 mL | 5.7312 mL |
50 mM | 0.0458 mL | 0.2292 mL | 0.4585 mL | 0.917 mL | 1.1462 mL |
100 mM | 0.0229 mL | 0.1146 mL | 0.2292 mL | 0.4585 mL | 0.5731 mL |
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. |
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Human D2 and D4 dopamine receptors couple through betagamma G-protein subunits to inwardly rectifying K+ channels (GIRK1) in a Xenopus oocyte expression system: selective antagonism by L-741,626 and L-745,870 respectively.[Pubmed:9833627]
Neuropharmacology. 1998 Aug;37(8):983-7.
To examine the effects of a novel selective D4 receptor ligand, L-745,870 (3-[4-(4-chlorophenyl)piperazin-1-yl]methyl-1H-pyrrolo[2,3-b]pyrid ine), on human dopamine receptor function, the ability of this ligand to antagonise G-protein gated inwardly rectifying K+ (GIRK/Kir3) currents activated by cloned human D2 and D4 receptors expressed in Xenopus oocytes was examined using voltage-clamp recording. Its effects were also contrasted with that of a selective D2 receptor antagonist L-741,626. L-745,870 had no detectable agonist activity on human D4 receptors and selectively blocked currents activated by D4 but not D2 receptors. The role of G-protein subunits in dopamine receptor modulation of GIRK currents was also examined by co-expression of beta1 and/or gamma2 subunits on spontaneously active and receptor-activated currents. Currents activated by both D2 and D4 receptors were occluded by direct activation of GIRK currents following co-transfection with the cDNA encoding G-protein betagamma subunits. These data demonstrate that L-745,870 and L-741,626 act as antagonists on human D4 and D2 receptors respectively, and that activation of GIRK channels by these dopamine receptors can be disrupted by direct stimulation of K+ currents by G-protein betagamma subunits.
Schizophrenia and L-745,870, a novel dopamine D4 receptor antagonist.[Pubmed:9226994]
Trends Pharmacol Sci. 1997 Jun;18(6):186-8.
The discovery of a novel high-affinity and selective dopamine D4 receptor antagonist, L-745,870, and the results of clinical trials with this compound are reviewed. Despite several lines of evidence which suggest that a selective D4 receptor antagonist may be an effective antipsychotic agent with a lower propensity to induce extrapyramidal side-effects, L-745,870 was ineffective as an antipsychotic in humans.
Biological profile of L-745,870, a selective antagonist with high affinity for the dopamine D4 receptor.[Pubmed:9353380]
J Pharmacol Exp Ther. 1997 Nov;283(2):636-47.
L-745,870,(3-([4-(4-chlorophenyl)piperazin-1-yl]methyl)-1H- pyrollo[2,3-b] pyridine, was identified as a selective dopamine D4 receptor antagonist with excellent oral bioavailability and brain penetration. L-745,870 displaced specific binding of 0.2 nM [3H] spiperone to cloned human dopamine D4 receptors with a binding affinity (Ki) of 0. 43 nM which was 5- and 20-fold higher than that of the standard antipsychotics haloperidol and clozapine, respectively. L-745,870 exhibited high selectivity for the dopamine D4 receptor (>2000 fold) compared to other dopamine receptor subtypes and had moderate affinity for 5HT2, sigma and alpha adrenergic receptors(IC50 < 300 nM). In vitro, L-745,870 (0.1-1 microM) exhibited D4 receptor antagonist activity, reversing dopamine (1 microM) mediated 1) inhibition of adenylate cyclase in hD4HEK and hD4CHO cells; 2) stimulation of [35S] GTPgammaS binding and 3) stimulation of extracellular acidification rate, but did not exhibit any significant intrinsic activity in these assays. Although standard antipsychotics increase dopamine metabolism or plasma prolactin levels in rodents, L-745,870 (=30 mg/kg p.o.) had no effect in these assays. The lack of a suitable in vivo assay for D4 receptor activation prompted the use of in vivo surrogate marker assays which confirmed that doses of 5-60 microg/kg L-745,870 would be sufficient to occupy 50% D4 receptors in the brain. These results show that dopamine D4 receptor antagonism in the brain does not result in the same neurochemical consequences (increased dopamine metabolism or hyperprolactinemia) observed with typical neuroleptics.