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  3. Quercetin

Quercetin, a natural flavonoid, is a stimulator of recombinant SIRT1 and also a PI3K inhibitor with IC50 of 2.4 μM, 3.0 μM and 5.4 μM for PI3K γ, PI3K δ and PI3K β, respectively.

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

Quercetin Chemical Structure

Quercetin Chemical Structure

CAS No. : 117-39-5

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10 mM * 1 mL in DMSO
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Customer Review

Based on 56 publication(s) in Google Scholar

Other Forms of Quercetin:

Top Publications Citing Use of Products

55 Publications Citing Use of MCE Quercetin

WB

    Quercetin purchased from MedChemExpress. Usage Cited in: Life Sci. 2020 Sep 15;257:118116.  [Abstract]

    NRK-52E cells are treated with Quercetin (Quer, 20 μM) for 2 h prior to incubation with AngII (100 nM) for another 72 h. The expression of p21 and p16ink4a are detected using Western blotting, and quantitative analyses are performed.
    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Quercetin, a natural flavonoid, is a stimulator of recombinant SIRT1 and also a PI3K inhibitor with IC50 of 2.4 μM, 3.0 μM and 5.4 μM for PI3K γ, PI3K δ and PI3K β, respectively[1].

    IC50 & Target[1]

    PI3Kδ

    2.4 μM (IC50)

    PI3Kγ

    3 μM (IC50)

    PI3Kβ

    5.4 μM (IC50)

    Autophagy

     

    Mitophagy

     

    In Vitro

    Quercetin is a type of plant-based chemical, or phytochemical, used as an ingredient in supplements, beverages or foods. In several studies, it may have anti-inflammatory and antioxidant properties, and it is being investigated for a wide range of potential health benefits. Quercetin is a PI3K inhibitor with IC50 of 2.4-5.4 μM. Quercetin strongly abrogates PI3K and Src kinases, mildly inhibits Akt1/2, and slightly affected PKC, p38 and ERK1/2[1]. Quercetin inhibits TNF-induced LDH% release, EC-dependent neutrophils adhesion to bovine pulmonary artery endothelial cells (BPAEC), and BPAEC DNA synthesis and proliferation[2].

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

    In Vivo

    Combination of Quercetin (75 mg/kg) and 2-Methoxyestradiol enhances inhibition of human prostate cancer LNCaP and PC-3 cells xenograft tumor growth[3].

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

    Clinical Trial
    Molecular Weight

    302.24

    Formula

    C15H10O7

    CAS No.
    Appearance

    Solid

    Color

    Light yellow to yellow

    SMILES

    OC1=C(C2=CC=C(O)C(O)=C2)OC3=CC(O)=CC(O)=C3C1=O

    Structure Classification
    Initial Source
    Shipping

    Room temperature in continental US; may vary elsewhere.

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

    DMSO : 100 mg/mL (330.86 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    Ethanol : 16.67 mg/mL (55.15 mM; Need ultrasonic)

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 3.3086 mL 16.5431 mL 33.0863 mL
    5 mM 0.6617 mL 3.3086 mL 6.6173 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, 1 years; -20°C, 6 months. When stored at -80°C, please use it within 1 years. When stored at -20°C, please use it within 6 months.

    • Molarity Calculator

    • Dilution Calculator

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

    Mass
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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

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    C2

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    Volume (final)

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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 (8.27 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% (20% SBE-β-CD in Saline)

      Solubility: ≥ 2.5 mg/mL (8.27 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 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: 25 mg/mL (82.72 mM); Suspended solution; Need ultrasonic

    • Protocol 2

      Add each solvent one by one:  45% PEG300    5% Tween-80    50% Saline

      Solubility: 10 mg/mL (33.09 mM); Suspended solution; Need ultrasonic

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

    Dosage

    mg/kg

    Animal weight
    (per animal)

    g

    Dosing volume
    (per animal)

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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:
    %
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    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: 98.06%

    References
    Animal Administration
    [3]

    Mice are inoculated subcutaneously with 5×105 PC-3 cells suspended in 100μL PBS and 2×108 LNCaP cells suspended in 100μL of matrigel and PBS mixture (1:1) on the right back. When xenograft tumors reach a volume of approximately 100 mm3, mice are randomLy assigned to four groups (n=8 each group) and treated intraperitoneally. Therapeutic schedule based on our in vitro results, preliminary experiments and many other researchers' studies is as follows: (1) Vehicle control group: vehicle of quercetin on day 1, vehicle of 2-ME on day 2, (2) Quercetin treated group: quercetin 75 mg/kg on day 1, vehicle of 2-ME on day 2, (3) 2-ME treated group: vehicle of quercetin on day 1, 2-ME 150 mg/kg on day 2, (4) Combination treatment group: quercetin 75 mg/kg on day 1, 2-ME 150 mg/kg on day 2. Two days is a treatment cycle and the whole treatment process lasted for 4 weeks. Tumor sizes are monitored every 2 days using caliper and tumor volume are calculated according to the formula: L×S2×0.5, in which L represents the longest diameter and S represents the shortest diameter of tumor. Mice are weighed as well. At the end of treatment procedure, on day 29, mice are anesthetized with chloral hydrate and sacrificed by cervical dislocation. Xenograft tumors are taken out quickly and weighed. One part of it is put into liquid nitrogen immediately for future biomarker analysis and the other part is fixed in 10% neutral buffered formalin for immunohistochemical analysis. Serum biochemical parameters such as ALT, AST, creatinine and urea nitrogen that reflected drug toxicity are also detected.

    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, 1 years; -20°C, 6 months. When stored at -80°C, please use it within 1 years. When stored at -20°C, please use it within 6 months.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    Ethanol / DMSO 1 mM 3.3086 mL 16.5431 mL 33.0863 mL 82.7157 mL
    5 mM 0.6617 mL 3.3086 mL 6.6173 mL 16.5431 mL
    10 mM 0.3309 mL 1.6543 mL 3.3086 mL 8.2716 mL
    15 mM 0.2206 mL 1.1029 mL 2.2058 mL 5.5144 mL
    20 mM 0.1654 mL 0.8272 mL 1.6543 mL 4.1358 mL
    25 mM 0.1323 mL 0.6617 mL 1.3235 mL 3.3086 mL
    30 mM 0.1103 mL 0.5514 mL 1.1029 mL 2.7572 mL
    40 mM 0.0827 mL 0.4136 mL 0.8272 mL 2.0679 mL
    50 mM 0.0662 mL 0.3309 mL 0.6617 mL 1.6543 mL
    DMSO 60 mM 0.0551 mL 0.2757 mL 0.5514 mL 1.3786 mL
    80 mM 0.0414 mL 0.2068 mL 0.4136 mL 1.0339 mL
    100 mM 0.0331 mL 0.1654 mL 0.3309 mL 0.8272 mL
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    • 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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