Product Name

  • Name

    Epiandrosterone

  • EINECS 207-563-3
  • CAS No. 481-29-8
  • Article Data144
  • CAS DataBase
  • Density 1.085 g/cm3
  • Solubility Practically insoluble in water
  • Melting Point 172-174 °C
  • Formula C19H30O2
  • Boiling Point 413.1 °C at 760 mmHg
  • Molecular Weight 290.446
  • Flash Point 176.4 °C
  • Transport Information
  • Appearance white to off-white crystalline powder
  • Safety 22-24/25
  • Risk Codes
  • Molecular Structure Molecular Structure of 481-29-8 (Epiandrosterone)
  • Hazard Symbols
  • Synonyms 5a-Androstan-17-one, 3b-hydroxy- (8CI);3-Epiandrosterone;3b-Androsterone;3b-Hydroxy-17-oxo-5a-androstane;3b-Hydroxy-5a-androstan-17-one;3b-Hydroxy-5a-androstane-17-one;3b-Hydroxyandrostan-17-one;3b-Hydroxyetioallocholan-17-one;3b-OH-5a-Androstane-17-one;5a-Androstan-17-one-3b-ol;5a-Androstan-3b-ol-17-one;5a-Androstane-3b-ol-17-one;Androsterone, epi-;Androsterone, trans-;Isoandrosterone;NSC 93996;d-Epiandrosterone;epi-Androsterone;iso-Androsterone;trans-Androsterone;
  • PSA 37.30000
  • LogP 3.95910

Synthetic route

dehydroepiandrosterone
53-43-0

dehydroepiandrosterone

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With palladium on activated charcoal; hydrogen In ethanol at 20℃; under 2068.65 Torr; Inert atmosphere;100%
With palladium on activated charcoal; hydrogen In ethanol under 2068.65 Torr;100%
With palladium 10% on activated carbon; hydrogen In ethanol at 40℃; under 2068.65 Torr; for 12h;99%
(3β,5α)-3-hydroxyandrostan-17-one oxime
5615-34-9, 5717-84-0, 5953-71-9, 85848-91-5, 6030-66-6

(3β,5α)-3-hydroxyandrostan-17-one oxime

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With hydrogen; boric acid; acetone; W-2 Raney-Ni In tetrahydrofuran; methanol; water at 25℃; for 24h;100%
(3S,5S,8R,9S,10S,13S,14S)-10,13-dimethyl-3-((tetrahydrofuran-2-yl)oxy)hexadecahydro-17H-cyclopenta[a]phenanthren-17-one
111237-01-5

(3S,5S,8R,9S,10S,13S,14S)-10,13-dimethyl-3-((tetrahydrofuran-2-yl)oxy)hexadecahydro-17H-cyclopenta[a]phenanthren-17-one

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethanol for 1h; Ambient temperature;100%
3β-acetoxy-5α-androstan-17-one
1239-31-2

3β-acetoxy-5α-androstan-17-one

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With methanol; sodium hydroxide at 40℃; for 4h; Inert atmosphere;97%
With potassium hydroxide In methanol Heating;95%
With lipase from Candida cylindracea; octanol In various solvent(s) at 37℃; for 144h;92%
benzoyloxy-3β oxydo-17α(N) N-methylamino-17β (5α) androstane
94618-98-1

benzoyloxy-3β oxydo-17α(N) N-methylamino-17β (5α) androstane

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With potassium hydroxide; water In methanol for 1h; Ambient temperature;96%
C22H31NO3

C22H31NO3

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
Stage #1: C22H31NO3 With sodium tetrahydroborate In methanol at -10℃; for 0.5h;
Stage #2: With potassium hydroxide In methanol; water at 40℃; for 1h;
92%
C26H42O4

C26H42O4

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With CuCl2*H2O In ethanol for 2.5h; Hydrolysis; Heating;90%
androstanedione
846-46-8

androstanedione

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With sodium dithionite; phase transfer catalyst; sodium hydrogencarbonate In toluene for 8h; Heating;87%
With ethanol; nickel Hydrogenation;
With ethanol; sodium ethanolate; platinum Hydrogenation;
racem. trans-5,6-Dimethoxy-1,3-cyclohexadien
102698-33-9

racem. trans-5,6-Dimethoxy-1,3-cyclohexadien

A

Epiandrosterone
481-29-8

Epiandrosterone

(+)-anti-7,syn-8-Dimethoxy-2-oxa-3-azabicyclo<2.2.2>oct-5-en
102848-89-5, 107537-59-7, 109906-45-8, 149116-95-0

(+)-anti-7,syn-8-Dimethoxy-2-oxa-3-azabicyclo<2.2.2>oct-5-en

Conditions
ConditionsYield
With 17α-chloro-17β-nitroso-3β-hydroxy-5α-androstane In methanol; chloroform at -18℃; for 240h;A 76%
B 87%
androstanedione
846-46-8

androstanedione

A

Epiandrosterone
481-29-8

Epiandrosterone

B

cis-androsterone
53-41-8

cis-androsterone

Conditions
ConditionsYield
With trimethylamine-borane; silica gel; iron(III) chloride In benzene for 2h; Ambient temperature;A 60.2%
B 20.9%
With trimethylamine-borane; silica gel; iron(III) chloride In benzene for 2h; Product distribution; Ambient temperature; various catalysts and times;A 60.2%
B 20.9%
With hydrogen; Nic In tetrahydrofuran; ethanol at 25℃; under 760 Torr; for 1.16667h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
5-androgen-3,17-diol
571-20-0

5-androgen-3,17-diol

A

Epiandrosterone
481-29-8

Epiandrosterone

B

androstanedione
846-46-8

androstanedione

Conditions
ConditionsYield
With potato dextrose broth medium In ethanol at 24 - 26℃; for 96h; Penicillium decumbens ATCC 10436;A 60%
B 10%
Acetic acid (3S,5S,8R,9S,10S,13S,14S,17S)-10,13-dimethyl-17-nitro-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester
65243-93-8

Acetic acid (3S,5S,8R,9S,10S,13S,14S,17S)-10,13-dimethyl-17-nitro-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester

A

Epiandrosterone
481-29-8

Epiandrosterone

B

(3β,5α,13α)-3-hydroxyandrostane-17-one
6247-88-7

(3β,5α,13α)-3-hydroxyandrostane-17-one

C

3β-Hydroxy-17,18-cyclo-5α-androstan
21522-24-7

3β-Hydroxy-17,18-cyclo-5α-androstan

D

3β,17a-dihydroxy-17a-aza-D-homo-5α-androstan-17-one
65243-91-6

3β,17a-dihydroxy-17a-aza-D-homo-5α-androstan-17-one

Conditions
ConditionsYield
With sodium ethanolate In ethanol Irradiation; Title compound not separated from byproducts;A n/a
B n/a
C 7%
D 55%
With sodium ethanolate In ethanol Irradiation;A n/a
B n/a
C 7%
D 55%
2-Oxo-propionic acid (3S,5S,8R,9S,10S,13S,14S)-10,13-dimethyl-17-oxo-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester

2-Oxo-propionic acid (3S,5S,8R,9S,10S,13S,14S)-10,13-dimethyl-17-oxo-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester

A

Epiandrosterone
481-29-8

Epiandrosterone

B

androstanedione
846-46-8

androstanedione

C

17a-oxa-D-homo-5α-androstane-3,17-dione
7801-32-3

17a-oxa-D-homo-5α-androstane-3,17-dione

Conditions
ConditionsYield
With Oxone; edetate disodium; sodium hydrogencarbonate In water; acetonitrile at 20℃; for 120h;A 38%
B 44%
C 17%
4-androstenediol
1156-92-9

4-androstenediol

A

Epiandrosterone
481-29-8

Epiandrosterone

B

androstanedione
846-46-8

androstanedione

Conditions
ConditionsYield
With potato dextrose broth medium In ethanol at 24 - 26℃; for 96h; Penicillium decumbens ATCC 10436;A 30%
B 36%
androstanedione
846-46-8

androstanedione

A

Epiandrosterone
481-29-8

Epiandrosterone

B

cis-androsterone
53-41-8

cis-androsterone

C

5-androgen-3,17-diol
571-20-0

5-androgen-3,17-diol

Conditions
ConditionsYield
for 504h; Rhodotorula mucilaginosa;A 18%
B 35%
C 30%
Stanolone
521-18-6

Stanolone

A

Epiandrosterone
481-29-8

Epiandrosterone

B

cis-androsterone
53-41-8

cis-androsterone

C

androstanedione
846-46-8

androstanedione

D

5-androgen-3,17-diol
571-20-0

5-androgen-3,17-diol

Conditions
ConditionsYield
for 504h; Rhodotorula mucilaginosa;A 21%
B 33%
C 5%
D 33%
5-androgen-3,17-diol
571-20-0

5-androgen-3,17-diol

A

Epiandrosterone
481-29-8

Epiandrosterone

B

Stanolone
521-18-6

Stanolone

C

androstanedione
846-46-8

androstanedione

Conditions
ConditionsYield
at 25℃; for 12h; electrolysis: nickel net anode, cylindrical stainless steel cathode; electrolyte: 0.01M KOH/t-butanol - water (1:1);A 3%
B 28%
C 30%
<3-2H>androst-4-ene-3β,17β-diol
1232-16-2

<3-2H>androst-4-ene-3β,17β-diol

A

Epiandrosterone
481-29-8

Epiandrosterone

B

androstanedione
846-46-8

androstanedione

C

<3-2H>-5α-androstan-3β-ol-17-one

<3-2H>-5α-androstan-3β-ol-17-one

Conditions
ConditionsYield
With Penicillium decumbens ATCC 10436; potato dextrose broth medium In ethanol at 24 - 26℃; for 96h; Product distribution;A n/a
B 29%
C n/a
3β-acetoxy-17ξ-nitro-5α,13α-androstane
95723-33-4

3β-acetoxy-17ξ-nitro-5α,13α-androstane

A

Epiandrosterone
481-29-8

Epiandrosterone

B

(3β,5α,13α)-3-hydroxyandrostane-17-one
6247-88-7

(3β,5α,13α)-3-hydroxyandrostane-17-one

C

3β,17a-dihydroxy-17a-aza-D-homo-5α,13α-androstan-17-one
95723-34-5

3β,17a-dihydroxy-17a-aza-D-homo-5α,13α-androstan-17-one

Conditions
ConditionsYield
With sodium ethanolate In ethanol Irradiation; Title compound not separated from byproducts;A n/a
B n/a
C 22%
With sodium ethanolate In ethanol Irradiation;A n/a
B n/a
C 22%
testosterone
58-22-0

testosterone

A

Epiandrosterone
481-29-8

Epiandrosterone

B

Androstenedione
63-05-8

Androstenedione

C

cis-androsterone
53-41-8

cis-androsterone

D

androstanedione
846-46-8

androstanedione

Conditions
ConditionsYield
With Penicillium digitatum MRC 500787; MYB medium (malt extract 2percent, glucose 1percent, bacteriological peptone 1percent, yeast extract 0.3percent) In N,N-dimethyl-formamide at 24℃; for 120h;A 8.9%
B 16.3%
C 3.6%
D 6.4%
androstanedione
846-46-8

androstanedione

A

Epiandrosterone
481-29-8

Epiandrosterone

B

11α-hydroxy-5α-androstane-3,17-dione
29907-31-1

11α-hydroxy-5α-androstane-3,17-dione

C

3β,5α-dihydroxy-5α-androstan-17-one
17752-36-2

3β,5α-dihydroxy-5α-androstan-17-one

D

5-androgen-3,17-diol
571-20-0

5-androgen-3,17-diol

Conditions
ConditionsYield
With Cephalosporium aphidicola In ethanol; dimethyl sulfoxide for 168h;A 9%
B 3.5%
C 1%
D 5.5%
testosterone
58-22-0

testosterone

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
nach der Injektion aus dem Harn von Meerschweinchen;
cis-androsterone
53-41-8

cis-androsterone

A

Epiandrosterone
481-29-8

Epiandrosterone

B

androstanedione
846-46-8

androstanedione

C

androstanediol
1852-53-5

androstanediol

Conditions
ConditionsYield
bei der Einwirkung von Kaninchenleber-Schnitten unter aeroben Bedingungen;
androstanedione
846-46-8

androstanedione

A

Epiandrosterone
481-29-8

Epiandrosterone

B

5-androgen-3,17-diol
571-20-0

5-androgen-3,17-diol

Conditions
ConditionsYield
bei der Einwirkung von Faeulnisbakterien;
isopregnanolone
516-55-2

isopregnanolone

phenylmagnesium bromide

phenylmagnesium bromide

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With diethyl ether ueber mehrere Stufen;
cholestanol benzoate
5808-11-7

cholestanol benzoate

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
Gewinnung;
Gewinnung;
3β-hydroxy-10.13-dimethyl-17-isopropylidene-5α-gonane
73583-02-5

3β-hydroxy-10.13-dimethyl-17-isopropylidene-5α-gonane

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With ozone; acetic acid und Erwaermen der Reaktionsloesung;
5α-cholestan-3β-yl acetate
1255-88-5

5α-cholestan-3β-yl acetate

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
With chromium(VI) oxide; acetic acid at 95℃; Erhitzen des aus dem Reaktionsgem. mit Hilfe von Semicarbazid isolierten 3β-Acetoxy-5α-androstanon-(17)-semicarbazons mit einem Gemisch von Essigsaeure und konz.wss.Salzsaeure und Erhitzen des Reaktionsprod. mit aethanol.KOH;
With chromium(VI) oxide; acetic acid at 95℃; Erhitzen des aus Reaktionsgemisch mit Hilfe von Semicarbazid isolierten 3β-Acetoxy-5α-androstanon-(17)-semicarbazons mit wss.Oxalsaeure und Erhitzen des Reaktionsprod. mit aethanol.KOH;
campestanyl acetate
4356-09-6

campestanyl acetate

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
Gewinnung;
3β-acetoxy-5α-stigmastane
2364-21-8

3β-acetoxy-5α-stigmastane

Epiandrosterone
481-29-8

Epiandrosterone

Conditions
ConditionsYield
Gewinnung;
Epiandrosterone
481-29-8

Epiandrosterone

3β-hydroxy-17α-oxa-D-homo-5α-androstan-17-one
2061-71-4

3β-hydroxy-17α-oxa-D-homo-5α-androstan-17-one

Conditions
ConditionsYield
With toluene-4-sulfonic acid; 3-chloro-benzenecarboperoxoic acid In dichloromethane for 22h; Ambient temperature;100%
With boron trifluoride diethyl etherate; dihydrogen peroxide In tetrahydrofuran at 20 - 25℃; for 168h; Baeyer-Villiger Ketone Oxidation; regioselective reaction;81%
With 3-chloro-benzenecarboperoxoic acid In chloroform at 105℃; under 5325.53 Torr; for 0.0666667h; Baeyer-Villiger oxidation; Microwave irradiation;80%
With 3-chloro-benzenecarboperoxoic acid; ammonium cerium(IV) nitrate In dichloromethane at 20℃; Baeyer-Villiger oxidation;79%
Epiandrosterone
481-29-8

Epiandrosterone

tert-butyldimethylsilyl chloride
18162-48-6

tert-butyldimethylsilyl chloride

(3S,10S,13S)-3-((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydro-17H-cyclopenta-[a]phenanthren-17-one
57711-44-1

(3S,10S,13S)-3-((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydro-17H-cyclopenta-[a]phenanthren-17-one

Conditions
ConditionsYield
With 1H-imidazole In dichloromethane for 0.5h;100%
With dmap; triethylamine In dichloromethane for 15h; Ambient temperature;99%
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; for 0.0166667h;89%
Epiandrosterone
481-29-8

Epiandrosterone

tert-butylchlorodiphenylsilane
58479-61-1

tert-butylchlorodiphenylsilane

3-(t-butyl)diphenylsiloxy-androstan-17-one
400643-64-3

3-(t-butyl)diphenylsiloxy-androstan-17-one

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane100%
Epiandrosterone
481-29-8

Epiandrosterone

1,1'-carbonyldiimidazole
530-62-1

1,1'-carbonyldiimidazole

3β-(1H-Imidazol-1-yl)-5α-androstan-17-one

3β-(1H-Imidazol-1-yl)-5α-androstan-17-one

Conditions
ConditionsYield
In acetonitrile for 2h; Substitution; Heating;98%
Epiandrosterone
481-29-8

Epiandrosterone

4-fluorobenzaldehyde
459-57-4

4-fluorobenzaldehyde

16-(4-fluoro-benzylidene)-5α-androstan-3β-ol-17-one

16-(4-fluoro-benzylidene)-5α-androstan-3β-ol-17-one

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 1h;98%
With sodium hydroxide In methanol at 40℃; for 12h;95%
Epiandrosterone
481-29-8

Epiandrosterone

4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

3β-hydroxy-16-p-chlorobenzylidene-5α-androstan-17-one
303128-79-2

3β-hydroxy-16-p-chlorobenzylidene-5α-androstan-17-one

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 1h;98%
With sodium hydroxide In methanol at 40℃; for 12h;91%
Epiandrosterone
481-29-8

Epiandrosterone

2-chloro-benzaldehyde
89-98-5

2-chloro-benzaldehyde

C26H33ClO2
303128-78-1

C26H33ClO2

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 1h;98%
Epiandrosterone
481-29-8

Epiandrosterone

ortho-anisaldehyde
135-02-4

ortho-anisaldehyde

(E)-16-(2-methoxyphenyl)methylidene-trans-androsterone
1428382-40-4

(E)-16-(2-methoxyphenyl)methylidene-trans-androsterone

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 1h;98%
Epiandrosterone
481-29-8

Epiandrosterone

ethyltriphenylphosphonium bromide
1530-32-1

ethyltriphenylphosphonium bromide

17-(Z)-ethylidene-3β-hydroxy-5α-androstane
1159-24-6

17-(Z)-ethylidene-3β-hydroxy-5α-androstane

Conditions
ConditionsYield
Stage #1: ethyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20℃; for 1h;
Stage #2: Epiandrosterone In tetrahydrofuran Reflux; Inert atmosphere;
97.8%
With potassium tert-butylate In tetrahydrofuran for 4h; Wittig Olefination; Reflux;93.8%
With potassium tert-butylate In tetrahydrofuran for 3h; Wittig reaction; Heating;83%
Epiandrosterone
481-29-8

Epiandrosterone

16α-bromo-3β-hydroxy-5α-androstan-17-one
28507-02-0

16α-bromo-3β-hydroxy-5α-androstan-17-one

Conditions
ConditionsYield
With copper(I) bromide In methanol for 12h; Reflux;97%
With copper(ll) bromide In methanol for 12h; Heating;95%
With copper(ll) bromide In methanol at 65℃; for 12h;91%
Epiandrosterone
481-29-8

Epiandrosterone

butyryl chloride
141-75-3

butyryl chloride

epiandrosterone 3-butanoate
15253-56-2

epiandrosterone 3-butanoate

Conditions
ConditionsYield
With thallium(I) salt of thiazolidine-2-thione In benzene at 85℃; for 0.25h; ratio of acid chloride and reagent 6 to 3 equivalent;97%
Epiandrosterone
481-29-8

Epiandrosterone

4-methyl-benzaldehyde
104-87-0

4-methyl-benzaldehyde

16-(4-methyl-benzylidene)-5α-androstan-3β-ol-17-one

16-(4-methyl-benzylidene)-5α-androstan-3β-ol-17-one

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 1h;97%
With sodium hydroxide In methanol at 40℃; for 12h;91%
Epiandrosterone
481-29-8

Epiandrosterone

2-methylphenyl aldehyde
529-20-4

2-methylphenyl aldehyde

(E)-16-(2-methylphenyl)methylidene-trans-androsterone
1428382-39-1

(E)-16-(2-methylphenyl)methylidene-trans-androsterone

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 1h;97%
Epiandrosterone
481-29-8

Epiandrosterone

benzoyl chloride
98-88-4

benzoyl chloride

17-oxo-5α-androstan-3β-yl benzoate
6696-39-5

17-oxo-5α-androstan-3β-yl benzoate

Conditions
ConditionsYield
In pyridine for 1h;96%
In pyridine at 60℃; for 2h;90%
With pyridine
Epiandrosterone
481-29-8

Epiandrosterone

formic acid ethyl ester
109-94-4

formic acid ethyl ester

3β-hydroxy-16-(hydroxymethylene)-5α-androstan-17-one
6174-76-1

3β-hydroxy-16-(hydroxymethylene)-5α-androstan-17-one

Conditions
ConditionsYield
With sodium methylate In benzene for 4h; Heating;96%
With pyridine; sodium methylate at 20℃; for 18h; Inert atmosphere;96%
With sodium ethanolate In dichloromethane; water at 20℃; for 5h; Inert atmosphere;80%
With sodium methylate; benzene
Epiandrosterone
481-29-8

Epiandrosterone

A

C19H29(2)HO2

C19H29(2)HO2

B

<16,16-(2)H2>3β-hydroxy-5α-androstan-17-one
79037-35-7

<16,16-(2)H2>3β-hydroxy-5α-androstan-17-one

Conditions
ConditionsYield
With deuteromethanol; water-d2; sodium for 4h; Heating;A n/a
B 96%

Epiandrosterone Specification

The IUPAC name of Epiandrosterone is (3S,5S,8R,9S,10S,13S,14S)-3-hydroxy-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-17-one. With the CAS registry number 481-29-8, it is also named as 3beta-Hydroxyetioallocholan-17-one. The product's categories are pharmaceutical intermediates; steroids; 17-ketosteroids; biochemistry; hydroxyketosteroids. It is white to off-white crystalline powder whih is used for steroid hormone drug. It was first isolated in 1931, by Adolf Friedrich Johann Butenandt and Kurt Tscherning. Additionally, Epiandrosterone should be sealed in the container that the container is placed in the cool and dry aera. Furthermore, people ahould not breathe dust and avoid contact with skin and eyes.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 3.75; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 2; (4)#H bond donors: 1; (5)#Freely Rotating Bonds: 1; (6)Index of Refraction: 1.536; (7)Molar Refractivity: 83.49 cm3; (8)Molar Volume: 267.6 cm3; (9)Polarizability: 33.1×10-24 cm3; (10)Surface Tension: 41.1 dyne/cm; (11)Enthalpy of Vaporization: 76.93 kJ/mol; (12)Vapour Pressure: 1.5E-08 mmHg at 25°C; (13)Tautomer Count: 2; (14)Exact Mass: 290.22458; (15)MonoIsotopic Mass: 290.22458; (16)Topological Polar Surface Area: 37.3; (17)Heavy Atom Count: 21; (18)Complexity: 459.

Preparation of Epiandrosterone: It can be converted from the natural steroids androstanediol via 17β-hydroxysteroid dehydrogenase or from androstanedione via 3β-hydroxysteroid dehydrogenase. And it is also naturally obtained by the enzyme 5-alpha reductase from the adrenal hormone dehydroepiandrosterone (DHEA).

People can use the following data to convert to the molecule structure.
1.SMILES:O=C2[C@]1(CC[C@H]3[C@H]([C@@H]1CC2)CC[C@H]4C[C@@H](O)CC[C@]34C)C
2. InChI:InChI=1/C19H30O2/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/h12-16,20H,3-11H2,1-2H3/t12-,13-,14-,15-,16-,18-,19-/m0/s1.

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