1. Metabolic Enzyme/Protease
  2. Cytochrome P450
  3. (Rac)-Brassinazole

(Rac)-Brassinazole, triazole-type compound, is a brassinosteroid (BR) biosynthesis inhibitor. (Rac)-Brassinazole increases inhibition of CYP90B in BR biosynthesis

For research use only. We do not sell to patients.

(Rac)-Brassinazole Chemical Structure

(Rac)-Brassinazole Chemical Structure

CAS No. : 224047-41-0

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Other Forms of (Rac)-Brassinazole:

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Description

(Rac)-Brassinazole, triazole-type compound, is a brassinosteroid (BR) biosynthesis inhibitor. (Rac)-Brassinazole increases inhibition of CYP90B in BR biosynthesis[1][2]

In Vitro

(Rac)-Brassinazole (compound 5) does not retard rice stem elongation, and retardation is recovered by the addition of gibberellin (GA3), suggesting that such retardation is due to the inhibition of gibberellin biosynthesis[1].
(Rac)-Brassinazol (compound 31) results in a reduction in the effect on AtKO in gibberellin (GA) biosynthesis[2].

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

Molecular Weight

327.81

Formula

C18H18ClN3O

CAS No.
Appearance

Solid

SMILES

OC(C1=CC=CC=C1)(C)C(CC2=CC=C(Cl)C=C2)N3N=CN=C3

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 50 mg/mL (152.53 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 3.0505 mL 15.2527 mL 30.5055 mL
5 mM 0.6101 mL 3.0505 mL 6.1011 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.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
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Concentration
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Volume
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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

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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 (7.63 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 2.5 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 (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 (7.63 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).
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. 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 3.0505 mL 15.2527 mL 30.5055 mL 76.2637 mL
5 mM 0.6101 mL 3.0505 mL 6.1011 mL 15.2527 mL
10 mM 0.3051 mL 1.5253 mL 3.0505 mL 7.6264 mL
15 mM 0.2034 mL 1.0168 mL 2.0337 mL 5.0842 mL
20 mM 0.1525 mL 0.7626 mL 1.5253 mL 3.8132 mL
25 mM 0.1220 mL 0.6101 mL 1.2202 mL 3.0505 mL
30 mM 0.1017 mL 0.5084 mL 1.0168 mL 2.5421 mL
40 mM 0.0763 mL 0.3813 mL 0.7626 mL 1.9066 mL
50 mM 0.0610 mL 0.3051 mL 0.6101 mL 1.5253 mL
60 mM 0.0508 mL 0.2542 mL 0.5084 mL 1.2711 mL
80 mM 0.0381 mL 0.1907 mL 0.3813 mL 0.9533 mL
100 mM 0.0305 mL 0.1525 mL 0.3051 mL 0.7626 mL
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(Rac)-Brassinazole Related Classifications

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  • 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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(Rac)-Brassinazole
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