1. Metabolic Enzyme/Protease Neuronal Signaling
  2. FAAH
  3. URB937

URB937 is an orally active and peripherally restricted FAAH inhibitor (IC50=26.8 nM) and increases anandamide levels. URB937 fails to affect FAAH activity in the brain (not penetrate the blood-brain barrier).

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

URB937 Chemical Structure

URB937 Chemical Structure

CAS No. : 1357160-72-5

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
USD 110 In-stock
Solution
10 mM * 1 mL in DMSO USD 110 In-stock
Solid
1 mg USD 47 In-stock
5 mg USD 100 In-stock
10 mg USD 170 In-stock
50 mg USD 510 In-stock
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Based on 1 publication(s) in Google Scholar

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  • Biological Activity

  • Purity & Documentation

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Description

URB937 is an orally active and peripherally restricted FAAH inhibitor (IC50=26.8 nM) and increases anandamide levels. URB937 fails to affect FAAH activity in the brain (not penetrate the blood-brain barrier)[1].

IC50 & Target

IC50: 26.8 nM (FAAH)[1].

In Vitro

URB937 is actively extruded from the CNS by the ATP-binding cassette (ABC) membrane transporter, Abcg2[3].

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

In Vivo

URB937 (1 mg/kg, i.p.) administrated in mice increases anandamide levels in peripheral tissues, but not forebrain or hypothalamus[1].
URB937 (1 mg/kg, s.c.) suppresses pain responses elicited by i.p. injections of acetic acid[1].
URB937 in male rats (an oral dose 3 mg/kg, F = 36%) is absorbed at a moderate rate and displays a peak plasma concentration (Cmax) of 159.47 ng/ml, which was achieved one hour after administration. URB937 exhibits T1/2 of 60 min by an oral dose of 3 mg/kg[2].
URB937 produces a high degree of antinociception in female mice and rats in models of visceral and inflammatory pain. Moreover, the compound displayed a restricted access to placental and fetal tissues in pregnant mice and rats[3].
URB937 (1 mg/kg, every 2 days for 30 days) attenuates radiation-induced lung injury and increased endocannabinoid concentration in lung tissue[4].

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

Animal Model: Swiss Webster mice[1].
Dosage: 1 mg/kg.
Administration: S.C.
Result: Suppressesd pain responses elicited by i.p. injections of acetic acid.
Animal Model: Adult Sprague Dawley male and female rats (250-300 g)[2].
Dosage: 0.3, 1, 3, 10 mg/kg (Pharmacokinetic Analysis).
Administration: Single oral dose.
Result: Inhibited liver FAAH activity with a median effective dose (ED50) of 0.9 mg/kg.
Inhibits FAAH in peripheral tissues and identify a possible biomarker for target engagement.
Molecular Weight

354.40

Formula

C20H22N2O4

CAS No.
Appearance

Solid

Color

Off-white to light yellow

SMILES

O=C(OC1=CC(C2=CC=CC(C(N)=O)=C2)=C(O)C=C1)NC3CCCCC3

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 : 250 mg/mL (705.42 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 2.8217 mL 14.1084 mL 28.2167 mL
5 mM 0.5643 mL 2.8217 mL 5.6433 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)

Mass
=
Concentration
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Volume
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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

=
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: ≥ 2.08 mg/mL (5.87 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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: ≥ 2.08 mg/mL (5.87 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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

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 2.8217 mL 14.1084 mL 28.2167 mL 70.5418 mL
5 mM 0.5643 mL 2.8217 mL 5.6433 mL 14.1084 mL
10 mM 0.2822 mL 1.4108 mL 2.8217 mL 7.0542 mL
15 mM 0.1881 mL 0.9406 mL 1.8811 mL 4.7028 mL
20 mM 0.1411 mL 0.7054 mL 1.4108 mL 3.5271 mL
25 mM 0.1129 mL 0.5643 mL 1.1287 mL 2.8217 mL
30 mM 0.0941 mL 0.4703 mL 0.9406 mL 2.3514 mL
40 mM 0.0705 mL 0.3527 mL 0.7054 mL 1.7635 mL
50 mM 0.0564 mL 0.2822 mL 0.5643 mL 1.4108 mL
60 mM 0.0470 mL 0.2351 mL 0.4703 mL 1.1757 mL
80 mM 0.0353 mL 0.1764 mL 0.3527 mL 0.8818 mL
100 mM 0.0282 mL 0.1411 mL 0.2822 mL 0.7054 mL
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URB937 Related Classifications

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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URB937
Cat. No.:
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