2. Metsulfuron-methyl

Metsulfuron-methyl is a systemic sulfonylurea herbicide that has been widely used to control broadleaf weeds and annual grasses in rice, corn, wheat, and barley. Metsulfuron-methyl exhibits high herbicidal activity and low mammalian toxicity, with an LD50 for rats exceeding 5000 mg/kg.

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Metsulfuron-methyl Chemical Structure

Metsulfuron-methyl Chemical Structure

CAS No. : 74223-64-6

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Based on 1 publication(s) in Google Scholar

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Metsulfuron-methyl Related Antibodies

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Description

Metsulfuron-methyl is a systemic sulfonylurea herbicide that has been widely used to control broadleaf weeds and annual grasses in rice, corn, wheat, and barley. Metsulfuron-methyl exhibits high herbicidal activity and low mammalian toxicity, with an LD50 for rats exceeding 5000 mg/kg[1][2][3].

In Vivo

Metsulfuron-methyl (0.045 or 0.45 g a.i./ha, spraying, speed of 1 m/s, delivering 0.02 L/m2, with reference to the control group’s maturation time) effectively inhibits the growth and reproduction of five plants (including monocots and dicots, terrestrial and aquatic species: Mimulus ringens, Bidens cernua, Sinapis arvensis, Phaseolus vulgaris, and Echinochloa crusgalli), and the most effective herbicidal control was observed during the seed stage[2].
Note: g a.i./ha indicates the number of grams of active ingredient applied per hectare of land.

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

381.36

Formula

C14H15N5O6S
CAS No.
Appearance

Solid

Color

White to yellow

SMILES

O=C(OC)C1=CC=CC=C1S(=O)(NC(NC2=NC(OC)=NC(C)=N2)=O)=O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (262.22 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6222 mL 13.1110 mL 26.2219 mL
5 mM 0.5244 mL 2.6222 mL 5.2444 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 (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.

  • 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 (6.56 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% Corn Oil

    Solubility: ≥ 2.5 mg/mL (6.56 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

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.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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).
Calculation results:
Working solution concentration: 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)

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).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
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
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 (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 2.6222 mL 13.1110 mL 26.2219 mL 65.5549 mL
5 mM 0.5244 mL 2.6222 mL 5.2444 mL 13.1110 mL
10 mM 0.2622 mL 1.3111 mL 2.6222 mL 6.5555 mL
15 mM 0.1748 mL 0.8741 mL 1.7481 mL 4.3703 mL
20 mM 0.1311 mL 0.6555 mL 1.3111 mL 3.2777 mL
25 mM 0.1049 mL 0.5244 mL 1.0489 mL 2.6222 mL
30 mM 0.0874 mL 0.4370 mL 0.8741 mL 2.1852 mL
40 mM 0.0656 mL 0.3278 mL 0.6555 mL 1.6389 mL
50 mM 0.0524 mL 0.2622 mL 0.5244 mL 1.3111 mL
60 mM 0.0437 mL 0.2185 mL 0.4370 mL 1.0926 mL
80 mM 0.0328 mL 0.1639 mL 0.3278 mL 0.8194 mL
100 mM 0.0262 mL 0.1311 mL 0.2622 mL 0.6555 mL
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Metsulfuron-methyl 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.

Keywords:

Metsulfuron-methyl74223-64-6SystemicherbicidesulfonylureaweedslowmammaliantoxicityInhibitorinhibitorinhibit

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