3-Methyluridine
Based on 1 publication(s) in Google Scholar
3-Methyluridine (m3U; N3-Methyluridine) is a methylated nucleotide present in ribosomal RNA (rRNA), mainly targeting specific base sites of RNA molecules such as 23S rRNA. 3-Methyluridine can introduce a methyl group at the N3 position of uracil, affecting the secondary structure stability and base pairing ability of RNA, and regulating ribosome function. For example, it affects ribosomal subunit binding and tRNA interaction. 3-Methyluridine is often used as a key raw material for the synthesis of modified nucleotides, and is used to construct RNA oligonucleotides containing methylation modifications to study the effects of RNA methylation on gene expression and drug resistance.
For research use only. We do not sell to patients.
- Purity: 99.88%
- CAS No.: 2140-69-4
- Formula: C10H14N2O6
- Molecular Weight:258.23
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Storage:
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
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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
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Publications Citing Use of MedChemExpress (MCE) 3-Methyluridine
MoreAll Endogenous Metabolite Isoforms
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Biological Activity
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Human Endogenous Metabolite |
1. Single-cell methylation detection experiment:
3-Methyluridine (probe concentration 1 μM; ≥4.5 h) significantly distinguishes wild-type Escherichia coli containing methylated rRNA from mutants lacking KsgA methyltransferase through methylation-sensitive fluorescence in situ hybridization (MR-FISH) technology, showing the inhibitory effect of single methylation sites on probe binding[1].
2. RNA structure and stability analysis experiment:
3-Methyluridine (5-200 μM; thermal melting analysis time 48-72 h) in RNA hairpins containing the 1920-loop region, N3 methylation has a negligible effect on RNA thermodynamic stability and does not change its A-form conformation, which is similar to the effect of unmodified uridine[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 2140-69-4
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Appearance Solid
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Molecular Weight 258.23
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Formula C10H14N2O6
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Color Light yellow to yellow
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SMILES
O[C@H]1[C@@H](O)[C@H](N(C(N2C)=O)C=CC2=O)O[C@@H]1CO
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Synonyms
N3-Methyluridine
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Structure Classification
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Initial Source
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
Publications (1)
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Journal Impact Factor
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Most Recent
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Cell
Adenosine kinase and ADAL coordinate detoxification of modified adenosines to safeguard metabolism. [Abstract]2025 Oct 30;188(22):6151-6169.e24. PMID: 40840445
Solvent & Solubility
DMSO : 160 mg/mL (619.60 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 (protect from light). 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 (protect from light). 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: ≥ 2.67 mg/mL (10.34 mM); Clear solution
This protocol yields a clear solution of ≥ 2.67 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (26.7 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: ≥ 2.67 mg/mL (10.34 mM); Clear solution
This protocol yields a clear solution of ≥ 2.67 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (26.7 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 (protect from light)
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 (278 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)
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- Italian - IT (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
[1]. Rohan T Ranasinghe, et al. Detecting RNA base methylations in single cells by in situ hybridization. Nat Commun [Content Brief]
[2]. Desaulniers JP, et al. Solution conformations of two naturally occurring RNA nucleosides: 3-methyluridine and 3-methylpseudouridine. Bioorg Med Chem. 2005 Dec 15;13(24):6777-81. [Content Brief]
[3]. Chui HM, et al. Synthesis of a 3-methyluridine phosphoramidite to investigate the role of methylation in a ribosomal RNA hairpin. Bioorg Med Chem. 2002 Feb;10(2):325-32. [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 (protect from 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 | 3.8725 mL | 19.3626 mL | 38.7252 mL | 96.8129 mL |
| 5 mM | 0.7745 mL | 3.8725 mL | 7.7450 mL | 19.3626 mL | |
| 10 mM | 0.3873 mL | 1.9363 mL | 3.8725 mL | 9.6813 mL | |
| 15 mM | 0.2582 mL | 1.2908 mL | 2.5817 mL | 6.4542 mL | |
| 20 mM | 0.1936 mL | 0.9681 mL | 1.9363 mL | 4.8406 mL | |
| 25 mM | 0.1549 mL | 0.7745 mL | 1.5490 mL | 3.8725 mL | |
| 30 mM | 0.1291 mL | 0.6454 mL | 1.2908 mL | 3.2271 mL | |
| 40 mM | 0.0968 mL | 0.4841 mL | 0.9681 mL | 2.4203 mL | |
| 50 mM | 0.0775 mL | 0.3873 mL | 0.7745 mL | 1.9363 mL | |
| 60 mM | 0.0645 mL | 0.3227 mL | 0.6454 mL | 1.6135 mL | |
| 80 mM | 0.0484 mL | 0.2420 mL | 0.4841 mL | 1.2102 mL | |
| 100 mM | 0.0387 mL | 0.1936 mL | 0.3873 mL | 0.9681 mL |
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