2. Metabolic Enzyme/Protease Vitamin D Related/Nuclear Receptor Immunology/Inflammation Autophagy
  3. Endogenous Metabolite Progesterone Receptor Glucocorticoid Receptor NO Synthase Autophagy
  4. Mifepristone

Mifepristone  (Synonyms: RU486; RU 38486)

Cat. No.: HY-13683 Purity: 99.83%
COA Handling Instructions

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Mifepristone (RU486) is a progesterone receptor (PR) and glucocorticoid receptor (GR) antagonist with IC50s of 0.2 nM and 2.6 nM in in vitro assay.

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

Mifepristone Chemical Structure

Mifepristone Chemical Structure

CAS No. : 84371-65-3

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 66 In-stock
Solution
10 mM * 1 mL in DMSO USD 66 In-stock
Solid
50 mg USD 40 In-stock
100 mg USD 60 In-stock
500 mg USD 102 In-stock
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Based on 39 publication(s) in Google Scholar

Other Forms of Mifepristone:

Mifepristone Related Antibodies

Top Publications Citing Use of Products

37 Publications Citing Use of MCE Mifepristone

WB
IF

    Mifepristone purchased from MedChemExpress. Usage Cited in: Chinese Pharmacological Bulletin. 2017, 33(6): 878-882.

    Effect of RU486 on elevation of intracellular calcium induced by hydrocortisone in BV-2 cellsA a: Untreated cells; b:Cells are treated with hydro; c:Cells are treated with hydro after RU486;d: Cells are treated with RU486 only.

    Mifepristone purchased from MedChemExpress. Usage Cited in: Evid Based Complement Alternat Med. 2016;2016:5850739.  [Abstract]

    The effects of XYS on the protein levels of Caveolin-1 (a) and GR (b) in PHN cells after corticosterone-induced stress injury.

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    nNOS iNOS eNOS

    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Mifepristone (RU486) is a progesterone receptor (PR) and glucocorticoid receptor (GR) antagonist with IC50s of 0.2 nM and 2.6 nM in in vitro assay[1].

    IC50 & Target

    Human Endogenous Metabolite

     

    In Vitro

    The discovery of the first competitive progesterone antagonist, Mifepristone, has stimulated an intense search for more potent and more selective antiprogestins[1]. Cell growth is evaluated after 4 days of exposure to Mifepristone at 10 μM, a concentration close to the plasma concentration achievable in humans. The antiproliferative effect of NSC 119875 is potentiated when administered in combination with Mifepristone in HeLa cells. The IC50 of NSC 119875 in combination with Mifepristone is lower (14.2 μM) than that of NSC 119875 alone (34.2 μM) in HeLa cells with an approximately 2.5-fold difference. After treatment with Mifepristone, the accumulation of intracellular NSC 119875 in HeLa cells is 2-fold greater, representing a significant difference (p=0.009), compare with NSC 119875 alone from 0.79 to 1.52 μg/mg of protein[2].

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

    Mifepristone Related Antibodies
    In Vivo

    The cervix tumor xenograft models are treated with NSC 119875 alone, there is a tumor growth inhibition compare with control group. However, the tumor weight loss is even more significant (p<0.05) with the combination of NSC 119875 and Mifepristone at the doses used, showing a decrease of ~50% compared with the treatments alone by the end of the study[2]. Adult male Sprague-Dawley rats are subjected to a 4-day binge-like EtOH administration regimen (3 to 5 g/kg/i.g. every 8 hours designed to produce peak blood EtOH levels (BELs) of <300 mg/dL). Subgroups of animals receive s.c. injection of Mifepristone (20 or 40 mg/kg in peanut oil). Although Mifepristone produces no significant changes in behavior of EtOH-naïve animals, pretreatment with Mifepristone (40 mg/kg) significantly reducesthe severity of EtOH withdrawal. Asignificant interaction between diet and drug, F(5,55)=3.92, p<0.05, such that EtOH-treated animals receiving vehicle or 20 mg/kg of Mifepristone displayssignificantly more signs of EtOH withdrawal than does EtOH-naïve animals receiving the same drug treatment. Importantly, treatment with 40 mg/kg of Mifepristone significantly reduces the severity of EtOH withdrawal, in a dose-dependent manner[3].

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

    429.59

    Formula

    C29H35NO2
    CAS No.
    Appearance

    Solid

    Color

    White to light yellow

    SMILES

    C[C@@]12[C@@](C#CC)(O)CC[C@@]1([H])[C@]3([H])CCC4=CC(CCC4=C3[C@@H](C5=CC=C(N(C)C)C=C5)C2)=O
    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 (232.78 mM; ultrasonic and warming and heat to 60°C; 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 2.3278 mL 11.6390 mL 23.2780 mL
    5 mM 0.4656 mL 2.3278 mL 4.6556 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

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

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

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start)

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    Volume (start)

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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 (5.82 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 (5.82 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.

    For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
    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:  0.5% CMC-Na/saline water

      Solubility: 10 mg/mL (23.28 mM); Suspended solution; Need ultrasonic

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

    Dosage

    mg/kg

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    Dosing volume
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    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: 99.83%

    COA (252 KB) HNMR (260 KB) RP-HPLC (245 KB) MS (68 KB)

    Handling Instructions (2659 KB)
    References
    Cell Assay
    [2]

    The HeLa and CaSki human cervical cancer cell lines are used. The effect of Mifepristone on proliferation of cells exposed to NSC 119875 is evaluated using the XTT assay. The assay is based on the cleavage of the yellow tetrazolium salt XTT to form an orange formazan dye by metabolically active cells. The procedure is as follows. Cells are seeded into 96-well plates; Costar at a density of 6×103 viable cells per well in 100 μL culture medium. At the end of treatment with NSC 119875 alone or the combination of NSC 119875 plus Mifepristone, 50 μL XTT is added to each well (final concentration 0.3 mg/mL), follow by incubation for 4 h in a humidified atmosphere containing 5% CO2 at 37˚C. The absorbance of the samples is measured spectrophotometrically at 492 nm using a microtiter plate ELISA reader[2].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    Animal Administration
    [2][3]

    Mice[2]
    Female Nude mice between 6-8 weeks of age are implanted subcutaneously with 6×106 HeLa cells in a flank. Once tumors are ~5×5 mm, the animals are pair-matched into treatment and control groups. Each group consist of 8 tumor-bearing mice. The intraperitoneal administration of drugs or vehicle begin on day 0. NSC 119875, as a single agent, is administered intraperitoneally at a dose of 3 mg/kg daily on days 1 through 3; the dose of Mifepristone, as a single agent, is 2 mg/kg/day subcutaneously for 3 days; in the combination study, the mice concurrently receive NSC 119875 on the same schedule, and Mifepristone at the same dose 3 days previous to the administration of NSC 119875. The control animals receive only the vehicle. After administration of the drugs, mice are weighed and the tumors are measured with a caliper twice weekly. The tumor weight is calculated. Experiment is conducted for 74 days, after which time all animals are weighed and humanely euthanized.
    Rats[3]
    Adult male Sprague-Dawley rats, weighing between 224 and 245 g upon arrival, are used. Mifepristone (20 or 40 mg/kg) or vehicle (peanut oil) are administered subcutaneously (s.c.) once daily following the 0800 administration of EtOH or control diet. Mifepristone is suspended in peanut oil and sonicated for 30 minutes at least 24 hours prior to injection, it is then stored at 4°C until needed. Suspension is vortexed for 10 to 15 minutes prior to and as needed throughout dosing.

    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, 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 2.3278 mL 11.6390 mL 23.2780 mL 58.1950 mL
    5 mM 0.4656 mL 2.3278 mL 4.6556 mL 11.6390 mL
    10 mM 0.2328 mL 1.1639 mL 2.3278 mL 5.8195 mL
    15 mM 0.1552 mL 0.7759 mL 1.5519 mL 3.8797 mL
    20 mM 0.1164 mL 0.5820 mL 1.1639 mL 2.9098 mL
    25 mM 0.0931 mL 0.4656 mL 0.9311 mL 2.3278 mL
    30 mM 0.0776 mL 0.3880 mL 0.7759 mL 1.9398 mL
    40 mM 0.0582 mL 0.2910 mL 0.5820 mL 1.4549 mL
    50 mM 0.0466 mL 0.2328 mL 0.4656 mL 1.1639 mL
    60 mM 0.0388 mL 0.1940 mL 0.3880 mL 0.9699 mL
    80 mM 0.0291 mL 0.1455 mL 0.2910 mL 0.7274 mL
    100 mM 0.0233 mL 0.1164 mL 0.2328 mL 0.5820 mL
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    Mifepristone 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:

    Mifepristone84371-65-3RU486 RU 38486RU 486RU-486RU38486RU 38486RU-38486Endogenous MetaboliteProgesterone ReceptorGlucocorticoid ReceptorNO SynthaseAutophagyNR3C3Nitric oxide synthasesNOSInhibitorinhibitorinhibit

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