1. Vitamin D Related/Nuclear Receptor
  2. Androgen Receptor
  3. Cyproterone acetate

Cyproterone acetate is an anti-androgen (IC50=7.1 nM) and progestogen synthetic steroid. Cyproterone acetate has affinity with progesteron and with glucocorticoidal receptors.

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Cyproterone acetate Chemical Structure

Cyproterone acetate Chemical Structure

CAS No. : 427-51-0

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10 mM * 1 mL in DMSO
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Customer Review

Based on 2 publication(s) in Google Scholar

Other Forms of Cyproterone acetate:

Top Publications Citing Use of Products
  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

Cyproterone acetate is an anti-androgen (IC50=7.1 nM) and progestogen synthetic steroid. Cyproterone acetate has affinity with progesteron and with glucocorticoidal receptors[1][2].

In Vitro

Cyproterone acetate is a partial agonist, showing agonism for the AR, with EC50 of 4.0 μM, at relatively high concentrations[1].
Cyproterone acetate enhances TRAIL-induced androgen-independent prostate cancer cell apoptosis via up-regulation of death receptor 5[3].
Cyproterone acetate pretreatment (0,1,10, or 50 μM; 24 hours; subsequently exposed to cadmium for an additional 24 hours) resulted in a clear decrease in the sensitivity to cadmium in rat liver epithelial cell line[4].

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

In Vivo

Adult male C57 BL/6J mice injected with 0.08 mg/g of cyproterone acetate showed an increase in cellular lipid content in the zona fasciculata and zona retjculans of the adrenal cortex[5].

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

Clinical Trial
Molecular Weight

402.91

Formula

C23H27ClO4

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

C[C@@]12C(C(Cl)=C[C@]3([H])[C@]2([H])C[C@@]4(C)[C@@]3([H])CC[C@@]4(C(C)=O)OC(C)=O)=CC([C@H]5[C@@H]1C5)=O

Shipping

Room temperature in continental US; may vary elsewhere.

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

DMSO : 33.33 mg/mL (82.72 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Ethanol : 20 mg/mL (49.64 mM; Need ultrasonic)

H2O : < 0.1 mg/mL (insoluble)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.4819 mL 12.4097 mL 24.8194 mL
5 mM 0.4964 mL 2.4819 mL 4.9639 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • 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 (6.20 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 (6.20 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.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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:  Cremophor EL

    Solubility: 12.5 mg/mL (31.02 mM); Clear solution; Need ultrasonic and warming and heat to 55°C

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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
Ethanol / DMSO 1 mM 2.4819 mL 12.4097 mL 24.8194 mL 62.0486 mL
5 mM 0.4964 mL 2.4819 mL 4.9639 mL 12.4097 mL
10 mM 0.2482 mL 1.2410 mL 2.4819 mL 6.2049 mL
15 mM 0.1655 mL 0.8273 mL 1.6546 mL 4.1366 mL
20 mM 0.1241 mL 0.6205 mL 1.2410 mL 3.1024 mL
25 mM 0.0993 mL 0.4964 mL 0.9928 mL 2.4819 mL
30 mM 0.0827 mL 0.4137 mL 0.8273 mL 2.0683 mL
40 mM 0.0620 mL 0.3102 mL 0.6205 mL 1.5512 mL
DMSO 50 mM 0.0496 mL 0.2482 mL 0.4964 mL 1.2410 mL
60 mM 0.0414 mL 0.2068 mL 0.4137 mL 1.0341 mL
80 mM 0.0310 mL 0.1551 mL 0.3102 mL 0.7756 mL
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Cyproterone acetate 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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Cyproterone acetate
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