All Photos(4)





4-Androsten-17β-ol-3-one, 17β-Hydroxy-4-androsten-3-one, trans-Testosterone, 17β-Hydroxy-3-oxo-4-androstene
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

biological source

synthetic (organic)







drug control

USDEA Schedule III; Home Office Schedule 4.2; regulated under CDSA - not available from Sigma-Aldrich Canada


45% (w/v) aq 2-hydroxypropyl-β-cyclodextrin: soluble 18.2 mg/ml
absolute ethanol: soluble 0.5 mg/ml
chloroform: soluble 100 mg/mL, clear, colorless to very faintly yellow
H2O: insoluble
dioxane: soluble
methanol: soluble
methyl oleate: slightly soluble
vegetable oils: soluble

shipped in


storage temp.

room temp

SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide


Testosterone has been used as a standard to study the developmental profile of steroid hormones in male and female rat brains. This hormone has also been used to evaluate its effects on muscle mass and signaling in mice.

Biochem/physiol Actions

Testosterone secreted by the testis is converted to dihydrotestosterone in the target tissues where it appears to mediate many of the biological actions of testosterone. Androgens direct the development of the male phenotype during embryogenesis and at puberty.

Features and Benefits

This compound is featured on the Nuclear Receptors (Steroids) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
This compound is a featured product for ADME Tox research. Click here to discover more featured ADME Tox products. Learn more about bioactive small molecules for other areas of research at

Preparation Note

Testosterone dissolves in chloroform at 100 mg/ml to yield a clear, colorless to very faint yellow solution. It is also soluble in methanol, absolute ethanol (0.5 mg/ml), 45 percent (w/v) aqueous 2-hydroxypropyl-b-cyclodextrin (18.2 mg/ml), vegetable oils and dioxane. It is slightly soluble in methyl oleate and insoluble in water.

Signal Word


Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Carc. 2 - Repr. 1B

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects



Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What is the method of production for Product T1500, Testosterone?

    This information is listed on the product's Certificate of Origin, which is lot-specific and, thus, subject to change. Enter the lot number of interest into the Certificate of Origin search box on the product page to find this information.

  6. How long can I store a solution of Product T1500, Testosterone?

    We have not determined the solution stability of this product. As a guideline, please note the stability of product no. T5411, Testosterone solution 1.0 mg/mL, which is stable for  3 years at 2-8 C.

  7. What can I use to prepare a solution of Product T1500, Testosterone?

    The product is soluble in absolute ethanol (0.5 mg/ml), It is also soluble in vegetable oils, soluble in dioxan and slightly soluble in methyl oleate.

  8. It is possible to sterile filter a solution of Product T1500, Testosterone?

    A solution of testosterone cannot be sterile filtered, since the compound will stick to the filter paper, according to Sigma cell culture scientists' experience.

  9. How could I dissolve Product T1500, Testosterone for cell culture use?

    This product has not been tested for cell culture use. We offered Testosterone for cell culture, now discontinued, and for it our 1998 Sigma Cell Culture advised to dissolve 1 mg in 2.0 mL absolute ethanol, gently swirl to dissolve, then add 48 mL sterile medium to prepare 20 ug/ml stock solution. Working range: 20-300 ng/ml.

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Chikwendu Ibebunjo et al.
American journal of physiology. Endocrinology and metabolism, 300(2), E327-E340 (2010-11-04)
Declines in skeletal muscle size and strength, often seen with chronic wasting diseases, prolonged or high-dose glucocorticoid therapy, and the natural aging process in mammals, are usually associated with reduced physical activity and testosterone levels. However, it is not clear
Anne T M Konkle et al.
Endocrinology, 152(1), 223-235 (2010-11-12)
The prevailing view of sexual differentiation of mammalian brain is that androgen synthesized in the fetal and neonatal testis and aromatized centrally during a perinatal sensitive period is the sole source of brain estradiol and the primary determinant of sex
Frances S Chen et al.
Social cognitive and affective neuroscience, 10(6), 797-800 (2014-09-07)
Physical size and strength are associated with dominance and threat. The current study tested (i) whether men's evaluations of male strangers would be negatively influenced by cues indicating physical formidability, and (ii) whether these evaluations would be influenced by oxytocin
James R Bell et al.
American journal of physiology. Heart and circulatory physiology, 306(9), H1265-H1274 (2014-03-13)
Estrogen in females is conventionally considered a cardioprotective influence, but a role for estrogen in male cardioprotection has yet to be defined. Estrogen biosynthesis from testosterone is regulated by aromatase. Aromatase has recently been shown to be expressed in the
Y Zimmerman et al.
Human reproduction update, 20(1), 76-105 (2013-10-02)
BACKGROUND; Combined oral contraceptives (COCs) reduce levels of androgen, especially testosterone (T), by inhibiting ovarian and adrenal androgen synthesis and by increasing levels of sex hormone-binding globulin (SHBG). Although this suppressive effect has been investigated by numerous studies over many

Related Content

Tech Article 2112

Testing the tech article page

Tech Article 0712

Testing the Tech Article Page

Tech Article 2311

Testing of the Tech Article page

Category Page 2212

Testing the category page

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service