VK-2019
Based on 1 Customer Validation
VK-2019 is an orally bioavailable selective inhibitor of EBNA1. By binding to the protein-DNA interface to interfere with the recruitment and anchoring of the viral DNA replication machinery, VK-2019 effectively blocks the replication and proliferation of EBV in latently infected cells. VK-2019 reduces the copy number and gene expression level of Epstein-Barr virus in tumor cells, decreases the number of EBER-positive cells, and exhibits significant antiviral, immunomodulatory and antiproliferative activities. VK-2019 successfully inhibits tumor growth in EBV-dependent xenograft models. VK-2019 has favorable systemic exposure and acceptable safety profiles, and is widely used in research on advanced nasopharyngeal carcinoma and various EBV-associated cancers.
For research use only. We do not sell to patients.
- Purity: 99.97%
- CAS No.: 2044520-06-9
- Formula: C29H25NO4
- Molecular Weight:451.51
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
Biological Activity
VK-2019 binds to the protein:DNA interface pocket of EBNA1 and interferes with the key viral replication and DNA anchoring functions mediated by EBNA1[2].
VK-2019 (0.5-500 ng/mL; 2 h-541 d) is accurately and precisely quantified within the range of 0.5-500 ng/mL in human K2EDTA plasma via an LC-MS/MS analytical method. This method exhibits high stability, shows no significant carry-over, and is suitable for pharmacokinetic analysis[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| NCT Number | Sponsor | Condition | Start Date |
Phase
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|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 2044520-06-9
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Appearance Solid
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Molecular Weight 451.51
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Formula C29H25NO4
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Color Light yellow to yellow
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SMILES
O=C(C1=C(C2=CC3=C(C=CN3)C=C2)C(C#CC4=CC=C(COC5CCOCC5)C=C4)=CC=C1)O
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Solvent & Solubility
DMSO : 100 mg/mL (221.48 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 5 mg/mL (11.07 mM); Clear solution
This protocol yields a clear solution of ≥ 5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (50.0 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.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
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).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
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
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Data Sheet (274 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
[2]. Colevas AD, et al. First-in-Human Clinical Trial of a Small-Molecule EBNA1 Inhibitor, VK-2019, in Patients with Epstein-Barr-Positive Nasopharyngeal Cancer, with Pharmacokinetic and Pharmacodynamic Studies. Clin Cancer Res. 2025;31(5):815-823. [Content Brief]
[3]. Davis MT, et al. Validation of a robust and rapid liquid chromatography tandem mass spectrometric method for the quantitative analysis of VK-2019, a selective EBNA1 inhibitor. Biomed Chromatogr. 2024;38(2):e5775. [Content Brief]
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. 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 |
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| DMSO | 1 mM | 2.2148 mL | 11.0740 mL | 22.1479 mL | 55.3698 mL |
| 5 mM | 0.4430 mL | 2.2148 mL | 4.4296 mL | 11.0740 mL | |
| 10 mM | 0.2215 mL | 1.1074 mL | 2.2148 mL | 5.5370 mL | |
| 15 mM | 0.1477 mL | 0.7383 mL | 1.4765 mL | 3.6913 mL | |
| 20 mM | 0.1107 mL | 0.5537 mL | 1.1074 mL | 2.7685 mL | |
| 25 mM | 0.0886 mL | 0.4430 mL | 0.8859 mL | 2.2148 mL | |
| 30 mM | 0.0738 mL | 0.3691 mL | 0.7383 mL | 1.8457 mL | |
| 40 mM | 0.0554 mL | 0.2768 mL | 0.5537 mL | 1.3842 mL | |
| 50 mM | 0.0443 mL | 0.2215 mL | 0.4430 mL | 1.1074 mL | |
| 60 mM | 0.0369 mL | 0.1846 mL | 0.3691 mL | 0.9228 mL | |
| 80 mM | 0.0277 mL | 0.1384 mL | 0.2768 mL | 0.6921 mL | |
| 100 mM | 0.0221 mL | 0.1107 mL | 0.2215 mL | 0.5537 mL |
VK-2019 Related Classifications
HY-W725179 Related Classifications
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