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  4. Sirpiglenastat

Sirpiglenastat (DRP-104) is a broad acting glutamine antagonist. Sirpiglenastat has anticancer effects by directly targeting tumor metabolism and simultaneously inducing a potent antitumor immune response.

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

CAS No. : 2079939-05-0

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

Based on 2 publication(s) in Google Scholar

Sirpiglenastat Related Antibodies

Top Publications Citing Use of Products
Cell Proliferation/Viability Assay

    Sirpiglenastat purchased from MedChemExpress. Usage Cited in: Cell Rep Med. 2026 Feb 17;7(2):102613.

    Growth curve of MiaPaca2 cells cultured in medium with 2.0 mM glutamine and 0.5 µM DRP-104 (Sirpiglenastat), and treated with clone 22B or vehicle.

    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Sirpiglenastat (DRP-104) is a broad acting glutamine antagonist. Sirpiglenastat has anticancer effects by directly targeting tumor metabolism and simultaneously inducing a potent antitumor immune response[1][2].

    In Vitro

    Sirpiglenastat (DRP-104) treatment shows broad immune cell modulation effects including increased T, NK, and macrophages. Sirpiglenastat decreases pro-tumorigenic cytokines such as VEGF and KC (IL-8)[1].

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

    Sirpiglenastat Related Antibodies
    In Vivo

    CT26 bearing mice treated with Sirpiglenastat (DRP-104) (0.5 mg/kg; s.c.; once a day; for 5 days) shows tumor growth inhibition at day 12 of 90%. Median survival days are 36 days[1].
    Sirpiglenastat (0.5 mg/kg; s.c) treatment significantly inhibits tumor growth in the H22 model[1].

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

    Animal Model: CT26 bearing mice[1]
    Dosage: 0.5 mg/kg
    Administration: s.c.; once a day; for 5 days
    Result: Showed tumor growth inhibition in mice.
    Clinical Trial
    Molecular Weight

    441.48

    Formula

    C22H27N5O5
    CAS No.
    Appearance

    Solid

    Color

    Off-white to yellow

    SMILES

    CC(C)OC([C@H](CCC(C=[N+]=[N-])=O)NC([C@@H](NC(C)=O)CC1=CNC2=CC=CC=C12)=O)=O
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage

    4°C, sealed storage, away from moisture and light

    *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

    Solvent & Solubility
    In Vitro: 

    DMSO : 100 mg/mL (226.51 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 2.2651 mL 11.3255 mL 22.6511 mL
    5 mM 0.4530 mL 2.2651 mL 4.5302 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 (sealed storage, away from moisture and light). 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
    ×
    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

    ×
    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 (5.66 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 (5.66 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).

    *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

    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: 99.13%

    SDS (252 KB)

    COA (253 KB) HNMR (339 KB) RP-HPLC (239 KB) LCMS (97 KB)

    Handling Instructions (2659 KB)
    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 (sealed storage, away from moisture and light). 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 2.2651 mL 11.3255 mL 22.6511 mL 56.6277 mL
    5 mM 0.4530 mL 2.2651 mL 4.5302 mL 11.3255 mL
    10 mM 0.2265 mL 1.1326 mL 2.2651 mL 5.6628 mL
    15 mM 0.1510 mL 0.7550 mL 1.5101 mL 3.7752 mL
    20 mM 0.1133 mL 0.5663 mL 1.1326 mL 2.8314 mL
    25 mM 0.0906 mL 0.4530 mL 0.9060 mL 2.2651 mL
    30 mM 0.0755 mL 0.3775 mL 0.7550 mL 1.8876 mL
    40 mM 0.0566 mL 0.2831 mL 0.5663 mL 1.4157 mL
    50 mM 0.0453 mL 0.2265 mL 0.4530 mL 1.1326 mL
    60 mM 0.0378 mL 0.1888 mL 0.3775 mL 0.9438 mL
    80 mM 0.0283 mL 0.1416 mL 0.2831 mL 0.7078 mL
    100 mM 0.0227 mL 0.1133 mL 0.2265 mL 0.5663 mL
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    Sirpiglenastat 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:

    Sirpiglenastat2079939-05-0DRP-104DRP104DRP 104Drug IntermediateDrug IintermediateanticancerimmunecheckpointVEGFIL-8Inhibitorinhibitorinhibit

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