1. Cell Cycle/DNA Damage PI3K/Akt/mTOR
  2. ATM/ATR
  3. AZ20

AZ20 is a potent and selective inhibitor of ATR with an IC50 of 5 nM, and has 8-fold selectivity against mTOR (IC50=38 nM).

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

AZ20 Chemical Structure

AZ20 Chemical Structure

CAS No. : 1233339-22-4

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Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
USD 73 In-stock
Solution
10 mM * 1 mL in DMSO USD 73 In-stock
Solid
5 mg USD 66 In-stock
10 mg USD 99 In-stock
50 mg USD 319 In-stock
100 mg USD 495 In-stock
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Customer Review

Based on 11 publication(s) in Google Scholar

Top Publications Citing Use of Products

    AZ20 purchased from MedChemExpress. Usage Cited in: Cell Death Dis. 2017 Aug 10;8(8):e2982.  [Abstract]

    Tumor pieces from M130116 PDXs treated with the vehicle or the RVX2135/AZ20 combination treatment are subjected to western blot analysis.

    View All ATM/ATR Isoform Specific Products:

    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    AZ20 is a potent and selective inhibitor of ATR with an IC50 of 5 nM, and has 8-fold selectivity against mTOR (IC50=38 nM).

    IC50 & Target[1]

    ATR

    5 nM (IC50)

    mTOR

    38 nM (IC50)

    PI3Kα

    13000 nM (IC50)

    In Vitro

    AZ20 inhibits ATR immunoprecipitated from HeLa nuclear extracts with an IC50 of 5 nM and ATR mediated phosphorylation of Chk1 in HT29 colorectal adenocarcinoma tumor cells with an IC50 of 50 nM[1].

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

    In Vivo

    AZ20 (25, 50 mg/kg, p.o.) has high permeability combined with good stability to rat hepatocytes and, despite the lack of progress in achieving markedly higher solubility, has respectable bioavailability in a low dose rat PK study. AZ20 (25, 50 mg/kg, p.o.) leads to significant tumor growth inhibition in female nude mice bearing LoVo tumors[1].

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

    Molecular Weight

    412.51

    Formula

    C21H24N4O3S

    CAS No.
    Appearance

    Solid

    Color

    White to off-white

    SMILES

    O=S(C1(C2=CC(N3[C@H](C)COCC3)=NC(C4=CC=CC5=C4C=CN5)=N2)CC1)(C)=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 (242.42 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    *"≥" means soluble, but saturation unknown.

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 2.4242 mL 12.1209 mL 24.2418 mL
    5 mM 0.4848 mL 2.4242 mL 4.8484 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 (6.06 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 (6.06 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%

    References
    Cell Assay
    [1]

    Compound dose ranges are created by diluting in 100% DMSO and then further into assay medium (EMEM, 10% FCS, 1% glutamine) using a Labcyte Echo acoustic dispensing instrument. Cells are plated in 384-well Costar plates at 9×104 cells per mL in 40 μL of EMEM, 10% FCS, 1% glutamine and grown for 24 h. Following addition of compound the cells are incubated for 60 min. A final concentration of 3 μM 4NQO (prepared in 100% DMSO) is then added using the Labcyte Echo, and the cells are incubated for a further 60 min. The cells are fixed by adding 40 μL of 3.7% v/v formaldehyde solution for 20 min. After removal of fix, cells are washed with PBS and permeabilized in 40 μL of PBS containing 0.1% Triton X-100. The cells are then washed, and 15 μL primary antibody solution (pChk1 Ser345) is added. The plates are incubated at 4°C overnight. The primary antibody is then washed off, and 20 μL of secondary antibody solution and 1 μM Hoechst 33258 added for 90 min at room temperature. The plates are washed and left in 40 μL of PBS. Plates are then read on an ArrayScan VTI instrument to determine staining intensities, and dose responses are obtained and used to determine the IC50 values for the compounds.

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

    Animal Administration
    [1]

    Female Swiss nu/nu mice are housed in negative pressure isolators. LoVo tumor xenografts are established in 8- to 12-week-old mice by injecting 1×107 tumor cells subcutaneously (100 μL in serum free medium) on the left dorsal flank. Animals are randomized into treatment groups when tumors become palpable. AZ20 is prepared in 10% DMSO/40% propylene glycol/50% water and administered orally. Tumors are measured up to three times per week with calipers. Tumor volumes are calculated and the data plotted using the geometric mean for each group versus time.

    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 2.4242 mL 12.1209 mL 24.2418 mL 60.6046 mL
    5 mM 0.4848 mL 2.4242 mL 4.8484 mL 12.1209 mL
    10 mM 0.2424 mL 1.2121 mL 2.4242 mL 6.0605 mL
    15 mM 0.1616 mL 0.8081 mL 1.6161 mL 4.0403 mL
    20 mM 0.1212 mL 0.6060 mL 1.2121 mL 3.0302 mL
    25 mM 0.0970 mL 0.4848 mL 0.9697 mL 2.4242 mL
    30 mM 0.0808 mL 0.4040 mL 0.8081 mL 2.0202 mL
    40 mM 0.0606 mL 0.3030 mL 0.6060 mL 1.5151 mL
    50 mM 0.0485 mL 0.2424 mL 0.4848 mL 1.2121 mL
    60 mM 0.0404 mL 0.2020 mL 0.4040 mL 1.0101 mL
    80 mM 0.0303 mL 0.1515 mL 0.3030 mL 0.7576 mL
    100 mM 0.0242 mL 0.1212 mL 0.2424 mL 0.6060 mL
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    AZ20 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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