2. GPCR/G Protein MAPK/ERK Pathway
  3. Ras
  4. NSC 23766

NSC 23766 is a cell-permeable, reversible and specific inhibitor of Rac GTPase, used for cancer treatment.

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

CAS No. : 733767-34-5

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
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Customer Review

Based on 50 publication(s) in Google Scholar

Other Forms of NSC 23766:

NSC 23766 Related Antibodies

Top Publications Citing Use of Products

50 Publications Citing Use of MCE NSC 23766

Cell Imaging/Staining
Bio/Physico-chemical Assay
In Vivo Imaging
IHC
In Vivo Efficacy Study

    NSC 23766 purchased from MedChemExpress. Usage Cited in: Cell Rep. 2025 Dec 6;44(12):116649.  [Abstract]

    Single WT and RHOA-KO HEK293 cells were seeded in Geltrex and cultured for 4 days in the presence of 10 μM NSC-23766.

    NSC 23766 purchased from MedChemExpress. Usage Cited in: Nat Metab. 2022 Dec;4(12):1830-1846.  [Abstract]

    NSC23766 (NSC; 1.5 mg/kg/day; i.p.) in combination with FX11(1 mg/kg/day; i.p.) for 2-3 weeks. The combination treatment displayed a much more pronounced inhibitory effect on lung metastasis of Hs578T cells than the single inhibitor treatment.

    NSC 23766 purchased from MedChemExpress. Usage Cited in: Nat Metab. 2022 Dec;4(12):1830-1846.  [Abstract]

    NSC23766 (NSC; 1.5 mg/kg/day; i.p.). The combination treatment displayed a much more pronounced inhibitory effect on lung metastasis of mammary tumors of MMTV-PyMT mice than the single inhibitor treatment.

    NSC 23766 purchased from MedChemExpress. Usage Cited in: Nat Metab. 2022 Dec;4(12):1830-1846.  [Abstract]

    NSC23766 (NSC; 1.5 mg/kg/day; i.p.). The combination treatment displayed a much more pronounced inhibitory effect on the growth of mammary tumors of MMTV-PyMT mice than the single inhibitor treatment.

    NSC 23766 purchased from MedChemExpress. Usage Cited in: Arch Toxicol. 2022 Jul;96(7):2113-2122.  [Abstract]

    Effect of glucose glycolysis on HETs induced by CPA. Heterophils were intervened with specific inhibitors NSC23766 (200 μM) for 30 min, then incubated for 90 min with CPA. HETs formation was quantified with PicoGreen.

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    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    NSC 23766 is a cell-permeable, reversible and specific inhibitor of Rac GTPase, used for cancer treatment.

    In Vitro

    NSC 23766 (100 μM) treatment effectively inhibits polar body emission in a dose-dependent manner. NSC 23766 (200 μM) increases the percentage of morphologically abnormal spindles of oocytes. In NSC 23766-treated oocytes, the p-MAPK protein expression is significantly decreased[2]. NSC23766 (50 μM) plus 100 ng/mL Jagged1, GDF9 and BMP15, reduces the number of germLine cell cysts and increases the number of primordial follicles[3]. NSC23766 significantly inhibits GTP-Rac1 activity and phosphorylation of Rac1-PAK, ERKs and p38 MAPK in the spinal dorsal horn neurons[4].

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

    NSC 23766 Related Antibodies
    In Vivo

    NSC23766 (2.5 mg/kg/day, i.p.) significantly attenuates the onset of spontaneous diabetes in NOD mice, without significant effects on the growth (body weights) of the mice. NSC23766 significantly increases the expression of Rac1 and CHOP, a marker for ER-stress, in islets from NOD mice[1].

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

    421.58

    Formula

    C24H35N7
    CAS No.
    Appearance

    Solid

    Color

    Off-white to light yellow

    SMILES

    NC1=CC(C)=NC2=CC=C(NC3=NC(NC(C)CCCN(CC)CC)=NC(C)=C3)C=C12
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage
    Powder -20°C 3 years
    In solvent -80°C 6 months
    -20°C 1 month
    Solvent & Solubility
    In Vitro: 

    DMSO : 100 mg/mL (237.20 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 2.3720 mL 11.8601 mL 23.7203 mL
    5 mM 0.4744 mL 2.3720 mL 4.7441 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
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    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start)

    C1

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    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 (5.93 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 (5.93 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

    Purity: 99.86%

    SDS (251 KB)

    COA (243 KB) HNMR (148 KB) RP-HPLC (221 KB) LCMS (94 KB)

    Handling Instructions (2659 KB)
    References
    Kinase Assay
    [4]

    Briefly, fresh spinal cord tissue of the lumbar enlargement is homogenised in the presence of protease and phosphatase inhibitors and lysed with buffer. After being centrifuged at 12,000× g for 5 min at 4°C, the supernatants are collected and incubated with PAK-PBD beads at 4°C on a rotator for 1 h and then the beads are pelleted through centrifugation at 5000× g for 3 min at 4°C. The resulting pellet is resuspended in LaemmLi buffer and boiled for 2 min. The bead samples are subjected to Western blot analysis. Total Rac1 in each sample is also determined by Western blot analysis.

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    Animal Administration
    [1]

    Balb/c control and NOD mice are at 7 weeks of age and are divided into four groups (n=8/group). At 8 weeks of age two groups of experimental animals (Balb/c and NOD) receive NSC23766 (2.5 mg/kg/day, i.p./daily) and other two groups, which serve as control Balb/c and NOD mice and receive equal volume of saline. The body weights and blood glucose are monitored every week for 34 weeks.

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    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 2.3720 mL 11.8601 mL 23.7203 mL 59.3007 mL
    5 mM 0.4744 mL 2.3720 mL 4.7441 mL 11.8601 mL
    10 mM 0.2372 mL 1.1860 mL 2.3720 mL 5.9301 mL
    15 mM 0.1581 mL 0.7907 mL 1.5814 mL 3.9534 mL
    20 mM 0.1186 mL 0.5930 mL 1.1860 mL 2.9650 mL
    25 mM 0.0949 mL 0.4744 mL 0.9488 mL 2.3720 mL
    30 mM 0.0791 mL 0.3953 mL 0.7907 mL 1.9767 mL
    40 mM 0.0593 mL 0.2965 mL 0.5930 mL 1.4825 mL
    50 mM 0.0474 mL 0.2372 mL 0.4744 mL 1.1860 mL
    60 mM 0.0395 mL 0.1977 mL 0.3953 mL 0.9883 mL
    80 mM 0.0297 mL 0.1483 mL 0.2965 mL 0.7413 mL
    100 mM 0.0237 mL 0.1186 mL 0.2372 mL 0.5930 mL
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    NSC 23766 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.

    Keywords:

    NSC 23766733767-34-5NSC23766NSC-23766RasInhibitorinhibitorinhibit

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