OSMI-2
Based on 1 publication(s) in Google Scholar
OSMI-2 (Compound 1b) is a cell-permeable O-linked N-acetylglucosamine transferase (OGT) inhibitor. Cells contain a large nuclear pool of partially spliced OGT transcript, and OSMI-2 increases detained intron splicing in cells.
For research use only. We do not sell to patients.
- Purity: 99.59%
- CAS No.: 2260542-60-5
- Formula: C26H25N3O7S2
- Molecular Weight:555.62
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
Publications Citing Use of MedChemExpress (MCE) OSMI-2
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Biological Activity
O-linked N-acetylglucosamine transferase (OGT)[1]
OSMI-2 (Compound 1b; 20-50 μM; 4-24 hours; HCT116 cells) treatment reduces O-GlcNAc levels at short treatment times (<8h). However, O-GlcNAc levels begins to recover at longer treatment times with OSMI-2[1].
A decrease in HCF-1 cleavage products and the appearance of uncleaved HCF-1 in cells treated with OSMI-2 (Compound 1b) is observed. Because OGT knockdown is known to decrease cell proliferation, the effects of OSMI-2 on cell growth in culture over 96h is also monitored. Although there is no evidence of apoptosis, the reduced growth of cells over time is observed, consistent with the knockdown results[1].
A time course performed with 20 μM OSMI-2 (Compound 1b) shows reciprocal changes in the abundance of OGT and OGA, with a particularly large increase in OGT; this may explain the recovery in O-GlcNAc levels with OSMI-2. At 24h where O-GlcNAc levels fully recovered[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:HCT116 cells
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Concentration:20 μM, 40 μM, 50 μM
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Incubation Time:4 hours, 24 hours
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Result:Reduced O-GlcNAc levels.
Chemical Information
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CAS No. 2260542-60-5
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Appearance Solid
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Molecular Weight 555.62
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Formula C26H25N3O7S2
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Color White to off-white
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SMILES
O=C(OC)CN(C([C@@H](C1=CC=CC=C1OC)NS(=O)(C2=CC3=C(NC(C=C3)=O)C=C2)=O)=O)CC4=CC=CS4
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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
Publications (1)
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Journal Impact Factor
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Most Recent
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Phytother Res
Z-Guggulsterone Inhibits Triple-Negative Breast Cancer Progression by Blocking Autophagosome-Lysosome Fusion via OGT-Mediated SNAP29 O-GlcNAcylation. [Abstract]2026 May;40(5):2364-2379. PMID: 41684288
Solvent & Solubility
DMSO : 100 mg/mL (179.98 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: 2.5 mg/mL (4.50 mM); Clear solution; Need ultrasonic
This protocol yields a clear solution of 2.5 mg/mL.
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.
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 (277 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 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. 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 | 1.7998 mL | 8.9990 mL | 17.9979 mL | 44.9948 mL |
| 5 mM | 0.3600 mL | 1.7998 mL | 3.5996 mL | 8.9990 mL | |
| 10 mM | 0.1800 mL | 0.8999 mL | 1.7998 mL | 4.4995 mL | |
| 15 mM | 0.1200 mL | 0.5999 mL | 1.1999 mL | 2.9997 mL | |
| 20 mM | 0.0900 mL | 0.4499 mL | 0.8999 mL | 2.2497 mL | |
| 25 mM | 0.0720 mL | 0.3600 mL | 0.7199 mL | 1.7998 mL | |
| 30 mM | 0.0600 mL | 0.3000 mL | 0.5999 mL | 1.4998 mL | |
| 40 mM | 0.0450 mL | 0.2250 mL | 0.4499 mL | 1.1249 mL | |
| 50 mM | 0.0360 mL | 0.1800 mL | 0.3600 mL | 0.8999 mL | |
| 60 mM | 0.0300 mL | 0.1500 mL | 0.3000 mL | 0.7499 mL | |
| 80 mM | 0.0225 mL | 0.1125 mL | 0.2250 mL | 0.5624 mL | |
| 100 mM | 0.0180 mL | 0.0900 mL | 0.1800 mL | 0.4499 mL |