2. Cell Cycle/DNA Damage Metabolic Enzyme/Protease
  3. Antifolate Endogenous Metabolite
  4. Folinic acid

Folinic acid (Leucovorin) is a biological folic acid and is generally administered along with Methotrexate (HY-14519) as a rescue agent to decrease MTX-induced toxicity.

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

CAS No. : 58-05-9

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Customer Review

Based on 16 publication(s) in Google Scholar

Other Forms of Folinic acid:

Folinic acid Related Antibodies

Top Publications Citing Use of Products

    Folinic acid purchased from MedChemExpress. Usage Cited in: Int J Immunopathol Pharmacol. 2025 Jan-Dec:39:3946320251338662.  [Abstract]

    Effects of FOLFOX on surface PD-L1 expression on AGS cells. Cells were treated with FOLFOX (Leucovorin: 14 μM; 5-Fu: 200 μM; Oxaliplatin: 6 μM) for 48 h. Then, cells were co-stained with annexin V and PD-L1 antibody. Representative histogram showing surface PD-L1 expression. Red histogram: total cells. Purple histogram: annexin V-positive cells.

    Folinic acid purchased from MedChemExpress. Usage Cited in: Int J Immunopathol Pharmacol. 2025 Jan-Dec:39:3946320251338662.  [Abstract]

    Effects of FOLFOX on surface MHC-I expression on AGS cells. Cells were treated with FOLFOX (Leucovorin: 14 μM; 5-Fu: 200 μM; Oxaliplatin: 6 μM) for 48 h. Then, cells were co-stained with annexin V and MHC-I antibody. Representative dot plots showing the expression of annexin V and surface MHC-I on AGS cells.

    Folinic acid purchased from MedChemExpress. Usage Cited in: Virology. 2023 Aug:585:205-214.

    Leucovorin (10 μM; 48 h). VP1 protein levels were detected using Western blot.

    Folinic acid purchased from MedChemExpress. Usage Cited in: Mol Oncol. 2020 Nov;14(11):2894-2919.  [Abstract]

    FOLFOX was administered as 6 mg/kg Oxaliplatin two hours before administration of 90 mg/kg Leucovorin and 50 mg/kg 5-Fluorouracil at day 1 and a repeat of 5‐Fluorouracil dosing on day 2. Weight loss of ODC-, CTRL-, and FOLFOX-treated mice over time of mice with DLD1 tumors.

    Folinic acid purchased from MedChemExpress. Usage Cited in: Mol Oncol. 2020 Nov;14(11):2894-2919.  [Abstract]

    The corresponding panels show the activity of ODC, the corresponding monotherapy, and FOLFOX (0.5 µM Leucovorin, 5-Fluorouracil, Oxaliplatin), measured by comparing ATP levels in CRC cells (colored bars) and healthy CCD841 colonic epithelial cells (black bars) with CTRL (<0.15% DMSO), thus obtaining the treatment window (TW).

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    Human Endogenous Metabolite Microbial Metabolite

    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Folinic acid (Leucovorin) is a biological folic acid and is generally administered along with Methotrexate (HY-14519) as a rescue agent to decrease MTX-induced toxicity[1].

    IC50 & Target

    Human Endogenous Metabolite

     

    In Vitro

    Methotrexate (MTX) alone induces a concentration-related increase in % micronucleated binucleated cells (MNBN) and % aberrant cells (Abs). There is a decrease in nuclear division index (NDI) with increase in MTX concentration. Similarly, the mitotic index (MI) also decreases in all concentrations of MTX tested. The addition of Folinic acid at 50 μg/ mL significantly reduces % MNBN (40-68%) and % Abs (36-77%). Inhibition is also seen at 5 μg/ mL Folinic acid (12 to 54% for MNBN and 20 to 61% for Abs) [1].

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

    Folinic acid Related Antibodies
    In Vivo

    Folinic acid (7.0 mg/kg; intraperitoneal injection; every second day; for 3 weeks; Balb/c young growing male mice) treatment following Methotrexate (MTX) administration appears to reverse this growth inhibition (Chronic administration of MTX induces suppression of skeletal growth in mice)[2].

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

    Animal Model: 24 Balb/c young growing male mice aged 3 weeks (11.88 ± 0.25 g)[2]
    Dosage: 7.0 mg/kg
    Administration: Intraperitoneal injection; every second day; for 3 weeks
    Result: Following MTX administration appears to reverse this growth inhibition.
    Molecular Weight

    473.44

    Formula

    C20H23N7O7
    CAS No.
    Appearance

    Solid

    Color

    Off-white to light yellow

    SMILES

    O=C(O)CC[C@@H](C(O)=O)NC(C1=CC=C(NCC2N(C=O)C3=C(N=C(N)NC3=O)NC2)C=C1)=O
    Structure Classification
    Initial Source
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage

    -20°C, protect from light, stored under nitrogen

    *In solvent : -80°C, 1 year; -20°C, 6 months (protect from light, stored under nitrogen)

    Solvent & Solubility
    In Vitro: 

    DMSO : 175 mg/mL (369.64 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 2.1122 mL 10.5610 mL 21.1220 mL
    5 mM 0.4224 mL 2.1122 mL 4.2244 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 year; -20°C, 6 months (protect from light, stored under nitrogen). When stored at -80°C, please use it within 1 year. 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
    =
    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: ≥ 2.08 mg/mL (4.39 mM); Clear solution

      This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

      Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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: ≥ 2.08 mg/mL (4.39 mM); Clear solution

      This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

      Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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, 1 year; -20°C, 6 months (protect from light, stored under nitrogen)

    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: 99.98%

    SDS (393 KB)

    COA (246 KB) HNMR (282 KB) RP-HPLC (244 KB) LCMS (99 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, 1 year; -20°C, 6 months (protect from light, stored under nitrogen). When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    DMSO 1 mM 2.1122 mL 10.5610 mL 21.1220 mL 52.8050 mL
    5 mM 0.4224 mL 2.1122 mL 4.2244 mL 10.5610 mL
    10 mM 0.2112 mL 1.0561 mL 2.1122 mL 5.2805 mL
    15 mM 0.1408 mL 0.7041 mL 1.4081 mL 3.5203 mL
    20 mM 0.1056 mL 0.5281 mL 1.0561 mL 2.6403 mL
    25 mM 0.0845 mL 0.4224 mL 0.8449 mL 2.1122 mL
    30 mM 0.0704 mL 0.3520 mL 0.7041 mL 1.7602 mL
    40 mM 0.0528 mL 0.2640 mL 0.5281 mL 1.3201 mL
    50 mM 0.0422 mL 0.2112 mL 0.4224 mL 1.0561 mL
    60 mM 0.0352 mL 0.1760 mL 0.3520 mL 0.8801 mL
    80 mM 0.0264 mL 0.1320 mL 0.2640 mL 0.6601 mL
    100 mM 0.0211 mL 0.1056 mL 0.2112 mL 0.5281 mL
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    Folinic acid 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:

    Folinic acid58-05-9leucovorinAntifolateEndogenous MetaboliteInhibitorinhibitorinhibit

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