research use only

Cyproterone Acetate Androgen Receptor antagonist

Name: Cyproterone Acetate
Brand: Selleck Chemicals
SKU: S2042
Availability: InStock
Rating: 5 (3 reviews)

Cat.No.S2042

Cyproterone acetate is an androgen receptor (AR) antagonist with IC50 of 7.1 nM, as well as a weak progesterone receptor agonist with weak pro-gestational and glucocorticoid activity.

Chemical Structure

Molecular Weight: 416.94

Jump to

Quality Control

Batch: Purity: 99.87%

99.87

Related Targets	Adrenergic Receptor Estrogen/progestogen Receptor GPR Glucocorticoid Receptor ACE RAAS Progesterone Receptor Opioid Receptor PGES THR
Other Androgen Receptor Inhibitors	Bavdegalutamide (ARV-110) RU58841 Galeterone EPI-001 3,3'-Diindolylmethane GSK-2881078 Chlormadinone acetate GDC-2992 JNJ-63576253 (TRC-253) ID11916

Solubility

In vitro
Batch:

DMSO : 83 mg/mL (199.06 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 20 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

% Tween 80

% ddH₂O

% DMSO

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	416.94	Formula	C₂₄H₂₉ClO₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	427-51-0	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CC(=O)C1(CCC2C1(CCC3C2C=C(C4=CC(=O)C5CC5C34C)Cl)C)OC(=O)C

Mechanism of Action

Targets/IC₅₀/Ki	Androgen Receptor 7.1 nM
In vitro	Cyproterone acetate clearly shows antagonistic properties, while being a partial agonist also, showing agonism for the AR, with EC50 of 4.0 μM, at relatively high concentrations. In the presence of 10 nM Testosterone, low concentrations of Cyproterone acetate inhibits T-stimulated transcription of 3XHRE-LUC, but at higher concentrations, transcription is stimulated.
In vivo	LH levels in Cyproterone acetate-treated rats do not dip below pretreatment levels, although they does not increase as much in the rats treated with 3.2 mg Cyproterone acetate/kg/day as in those which received 0.2 mg Cyproterone acetate/kg/day. Cyproterone acetate exhibits direct negative effect on reproductive organs weight and significant reducing effect on sperm count and Ca²⁺ contents. SOD and GST activities significantly decrease in addition to significant increase in NO, MDA contents reflecting the oxidative status of testis in Cyproterone acetate treated rats. Cyproterone acetate treatment plus artificial long days in autumn has a negative effect on sperm motility and sperm morphology. Androgen receptor occupation by Cyproterone acetate preferentially reduces the levels of spermatidal protamine in testis and spermatozoa involved in nuclear chromatin condensation.
References	[1] https://pubmed.ncbi.nlm.nih.gov/15483189/ [2] https://pubmed.ncbi.nlm.nih.gov/20599585/ [3] https://pubmed.ncbi.nlm.nih.gov/21319455/ [4] https://pubmed.ncbi.nlm.nih.gov/22645301/ [5] https://pubmed.ncbi.nlm.nih.gov/15854640/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT04925180	Completed	Signs of Androgenisation in Women e.g. Hirsutism Androgenetic Alopecia Acne and Seborrhea\|Hypersexuality in Men\|Sexual Deviations in Men\|Prostate Cancer	Bayer	October 18 2021	--
NCT02494297	Completed	Hirsutism\|Androgenetic Alopecia\|Severe Anemia\|Seborrhea\|PCOS	Center for Epidemiology and Health Research Germany\|Bayer	March 6 2015	--

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

C1=C0/X	C1:	LOG(C1):
C2=C1/X	C2:	LOG(C2):
C3=C2/X	C3:	LOG(C3):
C4=C3/X	C4:	LOG(C4):
C5=C4/X	C5:	LOG(C5):
C6=C5/X	C6:	LOG(C6):
C7=C6/X	C7:	LOG(C7):
C8=C7/X	C8:	LOG(C8):