MSA-2 dimer
Based on 1 publication(s) in Google Scholar
MSA-2 dimer is a selective, orally active non-nucleotide STING agonist (Kd=145 μM) with long-term antitumor and immunogenic activity. MSA-2 dimer is bound to STING as a non-covalent dimer exhibiting higher permeability than cyclic dinucleotide.
For research use only. We do not sell to patients.
- Purity: 99.88%
- CAS No.: 2377881-92-8
- Formula: C29H28O8S2
- Molecular Weight:568.66
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Storage:
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
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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
Publications Citing Use of MedChemExpress (MCE) MSA-2 dimer
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Biological Activity
Kd: 145 μM (STING)[1]
? MSA-2 dimer (40 mg/kg; s.c.; 25 days) induces complete tumor regression[1].
? MSA-2 dimer (60 mg/kg; p.o.; 4 hours) increases proinflammatory cytokine (IFN-β) level in tumors[1].
? MSA-2 dimer (60 mg/kg; s.c.; 4 hours) concentrations is observed in tumors than in plasma or other nontumor tissues [1].
? MSA-2 dimer (THP-1 cells) induces phosphorylation of both TBK1 and IR. MSA-2 dimer (10 μM and 33 μM; macrophages) induces IFN-β[1].
? MSA-2 dimer also exhibits dose-dependent antitumor activity[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:B16F10 tumor-bearing mice
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Dosage:60 mg/kg
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Administration:P.o.; 50 days
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Result:Inhibited tumor growth and prolonged overall survival.
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Animal Model:C57BL6 mice
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Dosage:40 mg/kg
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Administration:S.c.; 25 days
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Result:Induced complete tumor regression.
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Animal Model:C57BL6 mice
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Dosage:60 mg/kg
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Administration:P.o.; 4 hours
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Result:Increased proinflammatory cytokine (IFN-β) level in tumors.
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Animal Model:C57BL6 mice
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Dosage:50 mg/kg
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Administration:S.c.; 4 hours
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Result:MSA-2 concentrations were observed in tumors than in plasma or other nontumor tissues.
Chemical Information
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CAS No. 2377881-92-8
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Appearance Solid
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Molecular Weight 568.66
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Formula C29H28O8S2
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Color White to yellow
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SMILES
O=C(CCC(C1=CC2=C(C=C(C(CCCC3=CC4=C(C=C3OC)SC(C(CCC(O)=O)=O)=C4)=C2)OC)S1)=O)O
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Publications (1)
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Journal Impact Factor
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Most Recent
Solvent & Solubility
DMSO : 70 mg/mL (123.10 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 (sealed storage, away from moisture). 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 (sealed storage, away from moisture). 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: ≥ 1.75 mg/mL (3.08 mM); Clear solution
This protocol yields a clear solution of ≥ 1.75 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (17.5 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.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: 1.75 mg/mL (3.08 mM); Suspended solution; Need ultrasonic
This protocol yields a suspended solution of 1.75 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (17.5 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.
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. * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
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 (271 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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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). 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 | 1.7585 mL | 8.7926 mL | 17.5852 mL | 43.9630 mL |
| 5 mM | 0.3517 mL | 1.7585 mL | 3.5170 mL | 8.7926 mL | |
| 10 mM | 0.1759 mL | 0.8793 mL | 1.7585 mL | 4.3963 mL | |
| 15 mM | 0.1172 mL | 0.5862 mL | 1.1723 mL | 2.9309 mL | |
| 20 mM | 0.0879 mL | 0.4396 mL | 0.8793 mL | 2.1982 mL | |
| 25 mM | 0.0703 mL | 0.3517 mL | 0.7034 mL | 1.7585 mL | |
| 30 mM | 0.0586 mL | 0.2931 mL | 0.5862 mL | 1.4654 mL | |
| 40 mM | 0.0440 mL | 0.2198 mL | 0.4396 mL | 1.0991 mL | |
| 50 mM | 0.0352 mL | 0.1759 mL | 0.3517 mL | 0.8793 mL | |
| 60 mM | 0.0293 mL | 0.1465 mL | 0.2931 mL | 0.7327 mL | |
| 80 mM | 0.0220 mL | 0.1099 mL | 0.2198 mL | 0.5495 mL | |
| 100 mM | 0.0176 mL | 0.0879 mL | 0.1759 mL | 0.4396 mL |
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