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> ELN-441958 [913064-47-8]

ELN-441958 [913064-47-8]

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Cat# HY-15043-5mg

Size : 5mg

Brand : MedChemExpress

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ELN-441958 is a potent, neutral, competitive and selective bradykinin B1 receptor antagonist with a Ki of 0.26 nM against native human bradykinin B1 receptor. ELN-441958 has high oral bioavailability, and has low CNS exposure in the mouse.

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

ELN-441958 Chemical Structure

ELN-441958 Chemical Structure

CAS No. : 913064-47-8

This product is a controlled substance and not for sale in your territory.

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View All Isoforms
Bradykinin B1 Receptor (B1R) Bradykinin B2 Receptor (B2R)
Description

ELN-441958 is a potent, neutral, competitive and selective bradykinin B1 receptor antagonist with a Ki of 0.26 nM against native human bradykinin B1 receptor. ELN-441958 has high oral bioavailability, and has low CNS exposure in the mouse[1].

IC50 & Target

Ki: 0.26 nM (native human bradykinin B1 receptor)[1]
In Vitro

ELN-441958 is selective for primate over rodent B1 receptors with a rank order potency (KB, nanomolar) of human (0.12 ± 0.02) ~ rhesus monkey (0.24 ± 0.01) > rat (1.5 ± 0.4) > mouse (14 ± 4)[1].
ELN-441958 has good permeability and metabolic stability[1].

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

ELN-441958 Related Antibodies
In Vivo

ELN-441958 (1-10 mg/kg; s.c.; once) dose-dependently reduces carrageenan-induced thermal hyperalgesia in a rhesus monkey tail-withdrawal model[1].
ELN-441958 (0-10 mg/kg; i.v. or p.o.) exhibits a favorable pharmacokinetic profile in the rat and rhesus monkey[1].

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

Animal Model: Adult male and female rhesus monkeys[1]
Dosage: 1, 3, or 10 mg/kg
Administration: Subcutaneous injection, 30 min before carrageenan injection
Result: Increased the tail-withdrawal latencies in a dose-dependent manner.
Animal Model: Rhesus monkeys or Sprague-Dawley rats[1]
Dosage: 2.5 or 10 mg/kg for rats, 1 mg/kg or 5 mg/kg for rhesus monkeys
Administration: Intravenous injection (2.5 mg/kg and 1 mg/kg) or oral administration (10 mg/kg and 5 mg/kg) (Pharmacokinetic Analysis)
Result: In rats: When dosed intravenously, showed a moderate volume of distribution (2.7 L/kg, approximately four times total body water) and a moderate clearance (0.96 L/h/kg, approximately 24% of hepatic blood flow). The terminal plasma half-life of this compound in rats was 1.7 h. When dosed orally, the concentrations increased to a maximum of 1.2 g/mL at 2 h after dosing. The oral availability was 57%.
In rhesus monkeys: When dosed intravenously, showed a moderate volume of distribution (2.7 L/kg) and a moderate clearance (0.49 L/h/kg, approximately 32% of hepatic blood flow). The terminal plasma half-life was 3.9 h. When dosed orally, the concentrations increased to a maximum of 3.6 g/mL at 3.3 h after dosing. The calculated oral bioavailability was greater than 100%.
Molecular Weight

501.02

Formula

C29H29ClN4O2
CAS No.

913064-47-8
Appearance

Solid

Color

White to off-white

SMILES

ClC1=C2C(CN(C3=CC=CC(C(N4CCC5(CCN(C6=CC=NC=C6)CC5)CC4)=O)=C3)C2=O)=CC=C1
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (199.59 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 1.9959 mL 9.9796 mL 19.9593 mL
5 mM 0.3992 mL 1.9959 mL 3.9919 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
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 (4.99 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% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (4.99 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 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
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
References

  • [1]. Hawkinson JE, et al. Pharmacological, pharmacokinetic, and primate analgesic efficacy profile of the novel bradykinin B1 Receptor antagonist ELN441958. J Pharmacol Exp Ther.2007 Aug;322(2):619-630.  [Content Brief]

  • [1]. Hawkinson JE, et al. Pharmacological, pharmacokinetic, and primate analgesic efficacy profile of the novel bradykinin B1 Receptor antagonist ELN441958. J Pharmacol Exp Ther.2007 Aug;322(2):619-630.

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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 1.9959 mL 9.9796 mL 19.9593 mL 49.8982 mL
5 mM 0.3992 mL 1.9959 mL 3.9919 mL 9.9796 mL
10 mM 0.1996 mL 0.9980 mL 1.9959 mL 4.9898 mL
15 mM 0.1331 mL 0.6653 mL 1.3306 mL 3.3265 mL
20 mM 0.0998 mL 0.4990 mL 0.9980 mL 2.4949 mL
25 mM 0.0798 mL 0.3992 mL 0.7984 mL 1.9959 mL
30 mM 0.0665 mL 0.3327 mL 0.6653 mL 1.6633 mL
40 mM 0.0499 mL 0.2495 mL 0.4990 mL 1.2475 mL
50 mM 0.0399 mL 0.1996 mL 0.3992 mL 0.9980 mL
60 mM 0.0333 mL 0.1663 mL 0.3327 mL 0.8316 mL
80 mM 0.0249 mL 0.1247 mL 0.2495 mL 0.6237 mL
100 mM 0.0200 mL 0.0998 mL 0.1996 mL 0.4990 mL
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ELN-441958 Related Classifications

  • GPCR/G Protein
  • Bradykinin Receptor
Help & FAQs

Keywords:

ELN-441958913064-47-8ELN441958ELN 441958Bradykinin Receptoranti-hyperalgesichigh oral bioavailabilitylow CNS exposureInhibitorinhibitorinhibit

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