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  3. 4-Thiouridine

4-Thiouridine is a ribonucleoside analog, it is widely used in RNA analysis and (m)RNA labeling. 4-Thiouridine inhibits rRNA synthesis and causes a nucleolar stress response.

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4-Thiouridine Chemical Structure

4-Thiouridine Chemical Structure

CAS No. : 13957-31-8

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Customer Review

Based on 1 publication(s) in Google Scholar

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  • Biological Activity

  • Purity & Documentation

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Description

4-Thiouridine is a ribonucleoside analog, it is widely used in RNA analysis and (m)RNA labeling. 4-Thiouridine inhibits rRNA synthesis and causes a nucleolar stress response[1].

In Vitro

4-thiouridine (0-10 μM) labels and purifies nascent rRNA without significantly affecting rRNA synthesis[1].
4-thiouridine (≥50 μM) strongly inhibits production and processing of rRNA[1].

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

Molecular Weight

260.27

Formula

C9H12N2O5S

CAS No.
Appearance

Solid

Color

White to yellow

SMILES

O=C(N1)N([C@H]2[C@H](O)[C@H](O)[C@@H](CO)O2)C=CC1=S

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

H2O : ≥ 100 mg/mL (384.22 mM)

DMSO : 100 mg/mL (384.22 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.8422 mL 19.2108 mL 38.4216 mL
5 mM 0.7684 mL 3.8422 mL 7.6843 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, 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.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • 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: ≥ 2.5 mg/mL (9.61 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    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.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (9.61 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
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).
Purity & Documentation

Purity: ≥98.0%

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
H2O / DMSO 1 mM 3.8422 mL 19.2108 mL 38.4216 mL 96.0541 mL
5 mM 0.7684 mL 3.8422 mL 7.6843 mL 19.2108 mL
10 mM 0.3842 mL 1.9211 mL 3.8422 mL 9.6054 mL
15 mM 0.2561 mL 1.2807 mL 2.5614 mL 6.4036 mL
20 mM 0.1921 mL 0.9605 mL 1.9211 mL 4.8027 mL
25 mM 0.1537 mL 0.7684 mL 1.5369 mL 3.8422 mL
30 mM 0.1281 mL 0.6404 mL 1.2807 mL 3.2018 mL
40 mM 0.0961 mL 0.4803 mL 0.9605 mL 2.4014 mL
50 mM 0.0768 mL 0.3842 mL 0.7684 mL 1.9211 mL
60 mM 0.0640 mL 0.3202 mL 0.6404 mL 1.6009 mL
80 mM 0.0480 mL 0.2401 mL 0.4803 mL 1.2007 mL
100 mM 0.0384 mL 0.1921 mL 0.3842 mL 0.9605 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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4-Thiouridine 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.

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Product Name:
4-Thiouridine
Cat. No.:
HY-W011793
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