1. GPCR/G Protein Neuronal Signaling
  2. Cholecystokinin Receptor
  3. L-365260

L-365260 is an orally active and selective antagonist of non-peptide gastrin and brain cholecystokinin receptor (CCK-B), with Kis of 1.9 nM and 2.0 nM, respectively. L-365260 interacts in a stereoselective and competitive manner with guinea pig stomach gastrin and brain CCK receptors. L-365260 can enhance Morphine analgesia and prevents Morphine tolerance.

For research use only. We do not sell to patients.

L-365260 Chemical Structure

L-365260 Chemical Structure

CAS No. : 118101-09-0

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5 mg USD 160 In-stock
10 mg USD 260 In-stock
25 mg USD 550 In-stock
50 mg USD 950 In-stock
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Based on 1 publication(s) in Google Scholar

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Description

L-365260 is an orally active and selective antagonist of non-peptide gastrin and brain cholecystokinin receptor (CCK-B), with Kis of 1.9 nM and 2.0 nM, respectively. L-365260 interacts in a stereoselective and competitive manner with guinea pig stomach gastrin and brain CCK receptors. L-365260 can enhance Morphine analgesia and prevents Morphine tolerance[1][2][3].

IC50 & Target

CCKBR

 

In Vitro

L-365260 (1 μM) strongly attenuates the CCK8S- and CCK4-mediated depolarization in a different neuron[2].
L-365260 exhibits a similar high affinity for brain CCK-B receptors of rats, mice and man, and a lower affinity for gastrin and brain CCK-B (IC50=20-40 nM) receptors in dog tissues[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

L-365260 (0.01-10 mg/kg; s.c.) enhances analgesia induced by a submaximal dose of Morphine (4 mg/kg) in rats[3].
L-365260 (0.2 mg/kg; s.c. twice daily for 5 days) significantly prolongs the duration of Morphine analgesia in rats[3].
L-365260 (0.1-30 mg/kg; p.o.) antagonizes gastrin-stimulated acid secretion in mice (ED50=0.03 mg/kg), rats (ED50=0.9 mg/kg) and guinea pigs (ED50=5.1 mg/kg)[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Male Sprague-Dawley rats (300-350 g) were injected with Morphine[3]
Dosage: 0.01, 0.05, 0.1, 0.2, 0.75, 1.0, 10.0 mg/kg
Administration: S.c. 10 min prior to i.p. injection of 4 mg/kg Morphine
Result: Enhanced morphine analgesia.
Molecular Weight

398.46

Formula

C24H22N4O2

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(NC1=CC=CC(C)=C1)N[C@H]2C(N(C)C3=CC=CC=C3C(C4=CC=CC=C4)=N2)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (250.97 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.5097 mL 12.5483 mL 25.0966 mL
5 mM 0.5019 mL 2.5097 mL 5.0193 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

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C2

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Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (6.27 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% Corn Oil

    Solubility: ≥ 2.5 mg/mL (6.27 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.93%

References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.5097 mL 12.5483 mL 25.0966 mL 62.7416 mL
5 mM 0.5019 mL 2.5097 mL 5.0193 mL 12.5483 mL
10 mM 0.2510 mL 1.2548 mL 2.5097 mL 6.2742 mL
15 mM 0.1673 mL 0.8366 mL 1.6731 mL 4.1828 mL
20 mM 0.1255 mL 0.6274 mL 1.2548 mL 3.1371 mL
25 mM 0.1004 mL 0.5019 mL 1.0039 mL 2.5097 mL
30 mM 0.0837 mL 0.4183 mL 0.8366 mL 2.0914 mL
40 mM 0.0627 mL 0.3137 mL 0.6274 mL 1.5685 mL
50 mM 0.0502 mL 0.2510 mL 0.5019 mL 1.2548 mL
60 mM 0.0418 mL 0.2091 mL 0.4183 mL 1.0457 mL
80 mM 0.0314 mL 0.1569 mL 0.3137 mL 0.7843 mL
100 mM 0.0251 mL 0.1255 mL 0.2510 mL 0.6274 mL
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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Product Name:
L-365260
Cat. No.:
HY-106840
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