Details
Stereochemistry | ABSOLUTE |
Molecular Formula | C19H28O2 |
Molecular Weight | 288.4244 |
Optical Activity | UNSPECIFIED |
Defined Stereocenters | 6 / 6 |
E/Z Centers | 0 |
Charge | 0 |
SHOW SMILES / InChI
SMILES
[H][C@@]12CC[C@@H](O)[C@@]1(C)CC[C@@]3([H])[C@@]2([H])CCC4=CC(=O)CC[C@]34C
InChI
InChIKey=MUMGGOZAMZWBJJ-KZYORJDKSA-N
InChI=1S/C19H28O2/c1-18-9-7-13(20)11-12(18)3-4-14-15-5-6-17(21)19(15,2)10-8-16(14)18/h11,14-17,21H,3-10H2,1-2H3/t14-,15-,16-,17+,18-,19-/m0/s1
Epitestosterone (17alpha-hydroxy-4-androsten-3-one) is a naturally occurring epimer of testosterone. It apparently parallels the formation of testosterone, but on the other hand its concentration is not influenced by exogenous administration of testosterone. This fact creates the basis of the present doping control of testosterone abuse. Epitestosterone can be considered as a weak antiandrogen in the term of displacement of androgen from receptor binding and as an efficient inhibitor of 5 alpha-reductase. Epitestosterone exerts androgen receptor-independent neuroprotective activity in vitro.
Approval Year
Targets
Primary Target | Pharmacology | Condition | Potency |
---|---|---|---|
Target ID: CHEMBL1871 Sources: https://www.ncbi.nlm.nih.gov/pubmed/6208540 |
860.0 nM [Ki] | ||
Target ID: CHEMBL3072 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2532272 |
29.8 nM [Ki] | ||
Target ID: CHEMBL2363075 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2532272 |
1.2 µM [Ki] |
Conditions
Condition | Modality | Targets | Highest Phase | Product |
---|---|---|---|---|
Diagnostic | Unknown Approved UseUnknown |
PubMed
Title | Date | PubMed |
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Rapid test by liquid chromatography/tandem mass spectrometry to evaluate equine urine reactivity towards 17beta-OH steroids. | 2006 |
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Crystal structures of mouse 17alpha-hydroxysteroid dehydrogenase (apoenzyme and enzyme-NADP(H) binary complex): identification of molecular determinants responsible for the unique 17alpha-reductive activity of this enzyme. | 2006 Dec 8 |
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[Determination of anabolic steroid hormones in animal muscle tissues by gas chromatography/mass spectrometry]. | 2006 Jan |
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Hormonal homeostasis in a group of 216 aging Czech males and correlation with responses to a questionnaire of the University of St Louis. | 2006 Jun |
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Alternative methodology for the analysis of progesterone, testosterone, and epi-testosterone in bovine liver and veal muscle. | 2006 Mar-Apr |
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Short-term stability of testosterone and epitestosterone conjugates in urine samples: quantification by liquid chromatography-linear ion trap mass spectrometry. | 2006 Nov 21 |
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Partial filling micellar electrokinetic chromatography analysis of androgens and testosterone derivatives using two sequential pseudostationary phases. | 2006 Oct 27 |
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Sex, drugs and sports: prostaglandins, epitestosterone and sexual development. | 2007 |
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Tissue and serum levels of principal androgens in benign prostatic hyperplasia and prostate cancer. | 2007 Apr |
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Bayesian detection of abnormal values in longitudinal biomarkers with an application to T/E ratio. | 2007 Apr |
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Quantification of testosterone and epitestosterone in human urine samples by stir bar sorptive extraction--thermal desorption--gas chromatography/mass spectrometry: application to HIV-positive urine samples. | 2007 Feb |
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A diurnal variation in testicular hormone production is maintained following gonadotrophin suppression in normal men. | 2007 Jan |
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Variations in urine excretion of steroid hormones after an acute session and after a 4-week programme of strength training. | 2007 Jan |
|
Determination of association constants between steroid compounds and albumins by partial-filling ACE. | 2007 Oct |
|
Evaluation of boldenone formation and related steroids transformations in veal faeces by liquid chromatography/tandem mass spectrometry. | 2008 |
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Evolution of pharmacologic specificity in the pregnane X receptor. | 2008 Apr 2 |
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Analysis of steroids in yeast-mediated cell culture by on-line solid-phase extraction coupled high-performance liquid chromatography electrospray-ionization/mass spectrometry and novel continuous postcolumn infusion of internal standard technique. | 2008 Aug 15 |
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Evaluation of urinary steroid profile in highly trained cyclists. | 2008 Dec |
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Application of comprehensive two-dimensional gas chromatography to sterols analysis. | 2008 Dec 19 |
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Urinary androgens and cortisol metabolites in field-sampled bonobos (Pan paniscus). | 2008 Feb 1 |
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Androgen receptor transactivation assay using green fluorescent protein as a reporter. | 2008 Feb 15 |
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From population- to subject-based limits of T/E ratio to detect testosterone abuse in elite sports. | 2008 Jan 30 |
|
[Determination of endogenous anabolic steroids in hair using gas chromatography-tandem mass spectrometry]. | 2008 Jul |
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Testosterone doping: dealing with genetic differences in metabolism and excretion. | 2008 Jul |
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Factors influencing the steroid profile in doping control analysis. | 2008 Jul |
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Quantitative confirmation of testosterone and epitestosterone in human urine by LC/Q-ToF mass spectrometry for doping control. | 2008 Jul |
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Determination of urine steroid profile in untrained men to evaluate recovery after a strength training session. | 2008 Jul |
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Determination of 13C/12C ratios of endogenous urinary steroids: method validation, reference population and application to doping control purposes. | 2008 Jul |
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Ion trap MS/MS of intact testosterone and epitestosterone conjugates--adducts, fragile ions and the advantages of derivatisation. | 2008 Jul |
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Doping test results dependent on genotype of uridine diphospho-glucuronosyl transferase 2B17, the major enzyme for testosterone glucuronidation. | 2008 Jul |
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Isolation and quantification by high-performance liquid chromatography-ion-trap mass spectrometry of androgen sulfoconjugates in human urine. | 2008 Jul 4 |
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Genetic aspects of epitestosterone formation and androgen disposition: influence of polymorphisms in CYP17 and UGT2B enzymes. | 2008 Jun |
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Comparison of partial filling MEKC analyses of steroids with use of ESI-MS and UV spectrophotometry. | 2008 Mar |
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Liquid chromatographic method development for anabolic androgenic steroids using a monolithic column Application to animal feed samples. | 2008 Mar 17 |
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Direct quantification of steroid glucuronides in human urine by liquid chromatography-electrospray tandem mass spectrometry. | 2008 Mar 7 |
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Multivariate optimization of a derivatisation procedure for the simultaneous determination of nine anabolic steroids by gas chromatography coupled with mass spectrometry. | 2008 May 9 |
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Simultaneous measurement of boldenone (alpha and beta), ADD, testosterone, epitestosterone and AED in bovine faeces. | 2008 Sep |
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Determination of urinary androgen glucuronides by capillary electrophoresis with electrospray tandem mass spectrometry. | 2009 Apr |
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First case of fatal pulmonary peliosis without any other organ involvement in a young testosterone abusing male. | 2009 Apr 15 |
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Quantification of testosterone and epitestosterone in biological samples by capillary electrophoresis with immunoaffinity extraction. | 2009 Apr 30 |
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Steroid profiles of professional soccer players: an international comparative study. | 2009 Dec |
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UDP-glucuronosyltransferases (UGTs) 2B7 and UGT2B17 display converse specificity in testosterone and epitestosterone glucuronidation, whereas UGT2A1 conjugates both androgens similarly. | 2009 Feb |
|
Evaluation of equine urine reactivity towards phase II metabolites of 17-hydroxy steroids by liquid chromatography/tandem mass spectrometry. | 2009 Jan |
|
Physiological concentrations of anabolic steroids in human hair. | 2009 Jan 30 |
|
Sudden unexpected death in a female fitness athlete, with a possible connection to the use of anabolic androgenic steroids (AAS) and ephedrine. | 2009 Jan 30 |
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[Testosterone metabolism and doping test results]. | 2009 Jan-Feb |
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Analysis of conjugated steroid androgens: deconjugation, derivatisation and associated issues. | 2009 Jul 12 |
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Substantial advantage of a combined Bayesian and genotyping approach in testosterone doping tests. | 2009 Mar |
|
Associations among hair loss, oral sulfur-containing gases, and gastrointestinal and metabolic linked diseases in Japanese elderly men: pilot study. | 2009 Mar 13 |
|
Effects of recombinant human LH and hCG on serum and urine LH and androgens in men. | 2009 Sep |
Patents
Sample Use Guides
In animal studies, epitestosterone was injected or delivered by means of silastic capsules of different lengths. Dosage is not specified.
Route of Administration:
Parenteral
In Vitro Use Guide
Sources: https://www.ncbi.nlm.nih.gov/pubmed/11389183
The anti-androgen, 4 nM epitestosterone (the concentration represents peak physiological levels in reproductive age women and men) reduced apoptosis in primary cultures of human neurons induced to undergo apoptosis by serum deprivation.
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PARENT (METABOLITE)
SUBSTANCE RECORD