L-745,870 Trihydrochloride
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MedKoo CAT#: 532080

CAS#: 866021-03-6 (3HCl)

Description: L-745,870 Trihydrochloride is 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.


Chemical Structure

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L-745,870 Trihydrochloride
CAS# 866021-03-6 (3HCl)

Theoretical Analysis

MedKoo Cat#: 532080
Name: L-745,870 Trihydrochloride
CAS#: 866021-03-6 (3HCl)
Chemical Formula: C18H22Cl4N4
Exact Mass: 0.00
Molecular Weight: 436.200
Elemental Analysis: C, 49.56; H, 5.08; Cl, 32.51; N, 12.84

Price and Availability

Size Price Availability Quantity
10mg USD 385 2 Weeks
50mg USD 1280 2 Weeks
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Related CAS #: 866021-03-6 (3HCl)   158985-00-3 (free base)   1173023-36-3 (HCl)  

Synonym: L-745,870 Trihydrochloride; L 745870 ; L-745870; L745870.

IUPAC/Chemical Name: 3-(4-[4-Chlorophenyl]piperazin-1-yl)-methyl-1H-pyrrolo[2,3-b]pyridine trihydrochloride

InChi Key: KJSOYZLYCFYXFC-UHFFFAOYSA-N

InChi Code: 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

SMILES Code: ClC1=CC=C(N2CCN(CC3=CNC4=NC=CC=C43)CC2)C=C1.[H]Cl.[H]Cl.[H]Cl

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

More Info:

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 436.20 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Collins GT, Truccone A, Haji-Abdi F, Newman AH, Grundt P, Rice KC, Husbands SM, Greedy BM, Enguehard-Gueiffier C, Gueiffier A, Chen J, Wang S, Katz JL, Grandy DK, Sunahara RK, Woods JH. Proerectile effects of dopamine D2-like agonists are mediated by the D3 receptor in rats and mice. J Pharmacol Exp Ther. 2009 Apr;329(1):210-7. doi: 10.1124/jpet.108.144048. PubMed PMID: 19136638; PubMed Central PMCID: PMC2670592.

2: Beaulieu JM, Tirotta E, Sotnikova TD, Masri B, Salahpour A, Gainetdinov RR, Borrelli E, Caron MG. Regulation of Akt signaling by D2 and D3 dopamine receptors in vivo. J Neurosci. 2007 Jan 24;27(4):881-5. PubMed PMID: 17251429.

3: Melis MR, Succu S, Sanna F, Melis T, Mascia MS, Enguehard-Gueiffier C, Hubner H, Gmeiner P, Gueiffier A, Argiolas A. PIP3EA and PD-168077, two selective dopamine D4 receptor agonists, induce penile erection in male rats: site and mechanism of action in the brain. Eur J Neurosci. 2006 Oct;24(7):2021-30. PubMed PMID: 17067298.

4: Melis MR, Succu S, Mascia MS, Argiolas A. PD-168077, a selective dopamine D4 receptor agonist, induces penile erection when injected into the paraventricular nucleus of male rats. Neurosci Lett. 2005 Apr 29;379(1):59-62. PubMed PMID: 15814200.