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145-13-1

Basic Information
CAS No.: 145-13-1
Name: Pregnenolone
Molecular Structure:
Molecular Structure of 145-13-1 (Pregnenolone)
Formula: C21H32O2
Molecular Weight: 316.48
Synonyms: 3-beta-Hydroxypregn-5-en-20-one;3beta-Hydroxy-Delta5-pregnen-20-one;3beta-Hydroxy-5-pregnene-20-one;Delta5-Pregnen-3beta-ol-20-one;Pregn-5-ene-3beta-ol-20-one;Pregnenolone:Pregna-5-ene-3beta-ol-20-one;Arthenolone;
EINECS: 205-647-4
Density: 1.09 g/cm3
Melting Point: 188-190 °C
Boiling Point: 443.3 °C at 760 mmHg
Flash Point: 188.9 °C
Solubility: Insoluble in water
Appearance: white to off-white powder
Hazard Symbols:
Risk Codes:
Safety: 22-24/25
Transport Information:
PSA: 37.30000
LogP: 4.51530
Synthetic route
1778-02-5

Pregnenolone acetate

145-13-1

Pregnenolone

Conditions
ConditionsYield
With methanol; sodium In tetrahydrofuran at 20℃; for 4h; Inert atmosphere;100%
With potassium hydroxide; water In methanol at 30℃; for 2h;97%
With potassium hydroxide In water; tert-butyl alcohol at 30℃; for 12h;96%
2722-98-7

3β-Hydroxy-5-pregnen-20-one 1,2-Ethanediyl Dithioacetal

145-13-1

Pregnenolone

Conditions
ConditionsYield
With (1,1',1''-[nitrilotri(4,1-phenylene)]tri(ethan-1-one)); lithium perchlorate; silica gel; sodium hydrogencarbonate In dichloromethane; water; acetonitrile for 2h; electrolysis;100%

(3β)-3-(sulfooxy)pregn-5-en-20-one sodium salt

145-13-1

Pregnenolone

Conditions
ConditionsYield
With toluene-4-sulfonic acid In 1,4-dioxane at 20℃; Hydrolysis;97%
58701-45-4

3β-t-butyldimethylsilyloxy-pregn-5-en-20-one

145-13-1

Pregnenolone

Conditions
ConditionsYield
With chloro-methylsulfanyl-methane; water; potassium iodide In 1,4-dioxane at 50℃; for 3.3h;97%
Multi-step reaction with 5 steps
1.1: n-butyllithium / hexane; tetrahydrofuran / 2.17 h / -78 - -20 °C / Inert atmosphere
1.2: Cooling; Inert atmosphere
2.1: mercury(II) oxide; water; mercury dichloride / acetonitrile / 2.5 h / Reflux
3.1: tetrahydrofuran; diethyl ether / 1.5 h / Cooling
4.1: hydrogenchloride / dichloromethane; methanol; water / 0.25 h
5.1: human P450 11A1; yeast alcohol dehydrogenase; oxygen-18 / aq. phosphate buffer / 37 °C / Microbiological reaction
View Scheme
979-02-2

16-dehydropregnenolone acetate

145-13-1

Pregnenolone

Conditions
ConditionsYield
Stage #1: 16-dehydropregnenolone acetate With hydrogen at 0 - 25℃; for 1h;
Stage #2: With potassium hydroxide for 2h; Reflux;
92.8%
Multi-step reaction with 2 steps
1: 98 percent / H2 / Pd/C / ethyl acetate / 12 h / 30 °C / 2327.23 Torr
2: 97 percent / potassium hydroxide; H2O / methanol / 2 h / 30 °C
View Scheme
Multi-step reaction with 2 steps
1: 97 percent / H2 / Pd/C / 15 h / 30 °C / 2327.17 Torr
2: 96 percent / KOH / 2-methyl-propan-2-ol; H2O / 16 h / 30 °C
View Scheme
18843-28-2

3β-formyloxypregn-5-en-20-one

145-13-1

Pregnenolone

Conditions
ConditionsYield
With lipase from Candida cylindracea; octanol In various solvent(s) at 37℃; for 144h;90%
With bis(tri-n-butyltin)oxide In benzene at 80℃; for 1.5h;90%

Acetic acid (3S,8S,9S,10R,13S,14S,17S)-17-((R)-1-hydroxy-1,5-dimethyl-3-oxo-hexyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester

145-13-1

Pregnenolone

Conditions
ConditionsYield
With bis(tri-n-butyltin)oxide In toluene at 110℃; for 0.5h;90%

Pregnenolone hemisuccinate methyl ester

145-13-1

Pregnenolone

Conditions
ConditionsYield
With bis(tri-n-butyltin)oxide In toluene at 110℃; for 17h;85%

16α,17α-cyclobutenopregnenolone acetate

145-13-1

Pregnenolone

Conditions
ConditionsYield
With sodium hydroxide; dihydrogen peroxide In methanol at 5℃; for 24h; other reagent: lithium, NH3(liquid);78%
136634-01-0

(20R)-3β,20,26-trihydroxy-27-norcholest-5-en-22-one

145-13-1

Pregnenolone

Conditions
ConditionsYield
Stage #1: (20R)-3β,20,26-trihydroxy-27-norcholest-5-en-22-one With hydrazine hydrate In 2,2'-[1,2-ethanediylbis(oxy)]bisethanol at 165 - 195℃; for 2.5h;
Stage #2: With sodium periodate; sulfuric acid In ethanol for 0.0833333h;
37%
13057-17-5

bromethyl methyl ether

73465-46-0

3β,20-diacetoxy-5,17(20)pregnadien

A

145-13-1

Pregnenolone

B

82989-16-0

3β-hydroxy-17-methoxymethyl-5-pregnen-20-one

Conditions
ConditionsYield
With methyllithium In tetrahydrofuran at 0℃; for 0.0833333h;A 1.8 g
B 36%
1778-02-5

Pregnenolone acetate

129932-29-2

difluoromethyl-diphenyl-phosphine oxide

A

145-13-1

Pregnenolone

B

21,21-difluoro-20-methylpregna-5,20-dien-3β-ol

C

21,21-difluoro-20-methylpregna-5,20-dien-3β-ol acetate

Conditions
ConditionsYield
Stage #1: difluoromethyl-diphenyl-phosphine oxide With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.833333h;
Stage #2: Pregnenolone acetate In tetrahydrofuran for 1.5h; Wittig reaction; Heating;
A 30.2%
B 20%
C 13.7%
17954-98-2

22(R)-Hydroxycholesterol

A

145-13-1

Pregnenolone

B

(22R)-20α,22-dihydroxycholesterol

Conditions
ConditionsYield
In ethanol for 0.5h; mitochondria from the human placenta;A n/a
B 10%
1162-53-4

16-dehydropregnenolone

145-13-1

Pregnenolone

Conditions
ConditionsYield
With sodium hydroxide; nickel Hydrogenation;
With Pd-BaSO4; diethyl ether Hydrogenation;
917-64-6

methyl magnesium iodide

57764-90-6

3β-hydroxy-androstene-(5)-carboxylic acid-(17β)-nitrile

145-13-1

Pregnenolone

Conditions
ConditionsYield
With diethyl ether; benzene Behandeln des eigeengten Reaktionsgemisches mit wss.Saeure,zuletzt unter Erhitzen;
996-82-7, 34727-00-9, 73177-21-6

sodium diethylmalonate

7429-97-2

3β-acetoxy-5-etienic acid chloride

145-13-1

Pregnenolone

Conditions
ConditionsYield
With benzene anschliessend Behandeln mit Wasser und Erwaermen des Reaktionsprodukts mit methanol.KOH und anschliessend mit wss.-methanol.H2SO4;
1236-09-5

pregn-5-ene-3,20-dione

A

145-13-1

Pregnenolone

B

19037-28-6

(3α)-3-hydroxypregn-5-en-20-one

Conditions
ConditionsYield
With ethanol; nickel Hydrogenation;
465-53-2, 15387-47-0, 68138-60-3, 115225-84-8

6β-hydroxy-3α,5α-cyclo-pregnan-20-one

A

145-13-1

Pregnenolone

B

474-43-1

3β-fluoro-pregn-5-en-20-one

Conditions
ConditionsYield
With hydrogen fluoride
911442-53-0

3β-hydroxypregn-5-ene-16,20-dione

145-13-1

Pregnenolone

Conditions
ConditionsYield
With hydrogenchloride; ethanol; zinc
60534-25-0

(20S)-3β-acetoxy-5-pregnen-20-amine

145-13-1

Pregnenolone

Conditions
ConditionsYield
With diethyl ether; hypochloric acid; sodium sulfate Erwaermen des gebildeten Chloramins mit Natriumaethylat in Aethanol und Behandeln des Reaktiongemisches mit Wasser;
With diethyl ether; hypochloric acid; sodium sulfate Erwaermen des gebildeten Chloramins mit Natriumaethylat in Aethanol und Behandeln des Reaktiongemisches mit Wasser;
With diethyl ether; hypochloric acid; sodium sulfate Erwaermen des gebildeten Chloramins mit Natriumaethylat in Aethanol und Behandeln des Reaktiongemisches mit Wasser;
83-49-8

Hyodeoxycholic Acid

145-13-1

Pregnenolone

112790-35-9

3β-acetoxy-5-chloro-5α-pregnan-20-one

145-13-1

Pregnenolone

Conditions
ConditionsYield
With methanol; potassium carbonate
33769-71-0

21-diazo-3β-hydroxy-pregn-5-en-20-one

145-13-1

Pregnenolone

Conditions
ConditionsYield
With hydrogenchloride; ethanol; sodium iodide
108516-75-2

3β-acetoxy-24,24-diphenyl-chola-5,20(22)ξ,23-triene

145-13-1

Pregnenolone

Conditions
ConditionsYield
With chromium(VI) oxide; chloroform; acetic acid at 0℃; Erwaermen des Reaktionsprodukts mit K2CO3 und wss.Methanol;
1474-14-2

3β-acetoxybisnor-5-cholenic acid

546-67-8

lead(IV) tetraacetate

64-19-7

acetic acid

145-13-1

Pregnenolone

Conditions
ConditionsYield
Erwaermen des Reaktionsprod. mit meth. Kalilauge unter Stickstoff und Behandeln der danach isolierten Saeure mit Blei(IV)-acetat in Essigsaeure;
85541-82-8, 95119-09-8, 7254-03-7

methyl 5-androsten-3β-ol-17β-carboxylate

141-78-6

ethyl acetate

145-13-1

Pregnenolone

Conditions
ConditionsYield
With sodium Behandeln des Reaktionsgemisches mit Eis und wss.HCl und Erhitzen des Reaktionsprodukts mit wss.-aethanol.NaOH;
60-29-7

diethyl ether

53-43-0

dehydroepiandrosterone

141-52-6

sodium ethanolate

535-13-7

2-chloro-propanoic acid, ethyl ester

A

145-13-1

Pregnenolone

C

566-63-2

3β-hydroxy-17α-pregn-5-en-20-one

Conditions
ConditionsYield
Erhitzen des Reaktionsprodukts mit wss.-aethanol.NaOH;
53-43-0

dehydroepiandrosterone

535-13-7

2-chloro-propanoic acid, ethyl ester

A

145-13-1

Pregnenolone

B

566-63-2

3β-hydroxy-17α-pregn-5-en-20-one

Conditions
ConditionsYield
With diethyl ether; sodium ethanolate Erhitzen des Reaktionsprodukts mit wss.-aethanol.NaOH;
91-22-5

quinoline

17,20-epoxy-3-hydroxy-23,24-dinor-chol-5-en-21-oic acid

A

145-13-1

Pregnenolone

B

3β-hydroxy-17aβ-methyl-D-homo-androst-5-en-17-one

Conditions
ConditionsYield
at 200℃; Erhitzen des Stereoisomeren-Gemisches; stereoisomer(ic) of mp: 248 degree;
at 200℃; Erhitzen des Steroisomeren-Gemisches; stereoisomer(ic) of mp: 187 degree;
145-13-1

Pregnenolone

516-55-2

isopregnanolone

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen; acetic acid In tetrahydrofuran at 60℃; under 3102.97 Torr;100%
With palladium 10% on activated carbon; hydrogen In ethanol for 5h; Inert atmosphere;97%
palladium-carbon In ethanol96%
145-13-1

Pregnenolone

6192-84-3

1-((3S,8S,9S,10R,13S,14S,17R)-3-hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethan-1-one oxime

Conditions
ConditionsYield
With hydroxylamine hydrochloride In pyridine100%
With pyridine; hydroxylamine hydrochloride In ethanol at 130℃; for 1h; Inert atmosphere;95%
With hydroxylamine hydrochloride; sodium acetate In ethanol; water Reflux;62%
145-13-1

Pregnenolone

108-24-7

acetic anhydride

1778-02-5

Pregnenolone acetate

Conditions
ConditionsYield
With pyridine at 37℃; Inert atmosphere;100%
With pyridine for 60h; Ambient temperature;99%
With dmap; triethylamine at 25℃; for 0.916667h;99%
145-13-1

Pregnenolone

107-30-2

chloromethyl methyl ether

23328-05-4

3β-methoxymethylether-pregnane-5-ene-20-one

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In dichloromethane for 2h; Ambient temperature;100%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; Cooling with ice;98%
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; Inert atmosphere; Cooling with ice;95%
145-13-1

Pregnenolone

18162-48-6

tert-butyldimethylsilyl chloride

58701-45-4

3β-t-butyldimethylsilyloxy-pregn-5-en-20-one

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide for 25h; Ambient temperature;100%
With 1H-imidazole In dichloromethane100%
With 1H-imidazole In N,N-dimethyl-formamide100%
145-13-1

Pregnenolone

58479-61-1

tert-butylchlorodiphenylsilane

1526930-28-8

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

Conditions
ConditionsYield
With 1H-imidazole In N,N-dimethyl-formamide at 0 - 50℃;100%
With 1H-imidazole In dichloromethane at 0 - 20℃; for 4h;85%
145-13-1

Pregnenolone

1711-06-4

3-Methylbenzoyl chloride

pregne-3-m-methylbenzoate

Conditions
ConditionsYield
With pyridine at 40℃; for 24h;99.9%
145-13-1

Pregnenolone

59042-34-1

3β,20-dihydroxypregn-5-ene

Conditions
ConditionsYield
With hydrogen In ethanol at 100℃; under 15001.5 Torr; Autoclave;99%
With sodium tetrahydroborate In tetrahydrofuran; methanol at 0℃; for 0.666667h;28 g
With sodium tetrahydroborate; cerium(III) chloride heptahydrate In methanol Luche Cerium Reduction;
24680-50-0, 71277-11-7, 1963-36-6

4-methoxy-trans-cinnamaldehyde

145-13-1

Pregnenolone

1246397-34-1

(2E)-1-((10R,13S)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3(β)-hydroxy-10,13-dimethyl-1H-cyclopenta[α]phenanthren-17(β)-yl)-3-(4-methoxyphenyl)prop-2-en-1-one

Conditions
ConditionsYield
With sodium hydroxide In ethanol at 20℃; for 12h; Aldol condensation;99%
145-13-1

Pregnenolone

555-16-8

4-nitrobenzaldehdye

1569482-86-5

(E)-3β-hydroxy-21-(4-nitrobenzal)pregn-5-en-20-one

Conditions
ConditionsYield
With Aliquat 336; sodium hydroxide In water at 80℃; for 2h; Reagent/catalyst; Time; Aldol Condensation;99%
145-13-1

Pregnenolone

1779-49-3

Methyltriphenylphosphonium bromide

17879-91-3

(3S,8S,9S,10R,13S,14S,17R)-10,13-dimethyl-17-(prop-1-en-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 15 - 50℃; Inert atmosphere;
Stage #2: Pregnenolone In tetrahydrofuran at 50 - 65℃; for 1h; Inert atmosphere;
99%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20 - 50℃; for 0.5h; Inert atmosphere;
Stage #2: Pregnenolone In tetrahydrofuran at 50℃; for 1h;
99%
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 0℃; for 1h; Heck Reaction; Sealed tube; Inert atmosphere;
Stage #2: Pregnenolone In tetrahydrofuran at 0 - 20℃; for 16h; Sealed tube; Reflux;
97%
145-13-1

Pregnenolone

27200-84-6

methyl triphenylphosphonium bromide

17879-91-3

(3S,8S,9S,10R,13S,14S,17R)-10,13-dimethyl-17-(prop-1-en-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol

Conditions
ConditionsYield
Stage #1: methyl triphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 15 - 50℃; for 0.5h; Inert atmosphere;
Stage #2: Pregnenolone In tetrahydrofuran at 50 - 65℃; for 1h; Inert atmosphere;
99%
14371-10-9

(E)-3-phenylpropenal

145-13-1

Pregnenolone

(2E,4E)-1-((8S,9S,10R,13S,14S,17S)-3-hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-5-phenylpenta-2,4-dien-1-one

Conditions
ConditionsYield
With potassium hydroxide In ethanol; water for 1h; Inert atmosphere;99%
145-13-1

Pregnenolone

37610-80-3

1,3-dioxolan-2-ylethylmagnesium bromide

86476-21-3

24,24-ethylenedioxy-Δ5-chol-3β,20-diol

Conditions
ConditionsYield
In tetrahydrofuran for 1h; Ambient temperature;98.2%
145-13-1

Pregnenolone

100-52-7

benzaldehyde

120793-61-5

(2E)-1-((10R,13S)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3(β)-hydroxy-10,13-dimethyl-1H-cyclopenta[α]phenanthren-17(β)-yl)-3-phenylprop-2-en-1-one

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 0.333333h;98%
With potassium hydroxide In ethanol at 20℃; Claisen Schmidt condensation;92%
With aluminum oxide; potassium fluoride In ethanol for 2h; Reflux;90%
145-13-1

Pregnenolone

98-59-9

p-toluenesulfonyl chloride

6885-40-1

3β-toluene-4-sulfonyloxy-pregn-5-en-20-one

Conditions
ConditionsYield
With pyridine for 14h;98%
With pyridine; dmap at 20℃; for 12h;98%
With pyridine at 30℃; for 4h; Tosylation;94%
145-13-1

Pregnenolone

85552-32-5

1-((3S,8S,9S,10R,13S,14S,17S)-3-Hydroxy-10,13-dimethyl-hexadecahydro-20-oxa-cyclopropa[5,6]cyclopenta[a]phenanthren-17-yl)-ethanone

Conditions
ConditionsYield
With sodium carbonate; 3-chloro-benzenecarboperoxoic acid In dichloromethane98%
With methyl hexanoate; CpLIP2 Y179F (ipase/acyltransferase) from Candida parapsilosis; dihydrogen peroxide In aq. phosphate buffer; water at 20℃; pH=6.5; Enzymatic reaction;39%
With magnesium bis(monoperoxyphthalate)hexahydrate In acetone at 57℃; for 0.5h;
145-13-1

Pregnenolone

108-91-8

cyclohexylamine

317841-08-0

20-cyclohexyliminopregn-5-en-3β-ol

Conditions
ConditionsYield
With trifluoroacetic acid for 20h; Heating;98%
421-83-0

trifluoromethane sulfonyl chloride

145-13-1

Pregnenolone

58701-45-4

3β-t-butyldimethylsilyloxy-pregn-5-en-20-one

Conditions
ConditionsYield
With 1H-imidazole In N,N-dimethyl-formamide at 20℃; for 12h;98%
79-37-8

oxalyl dichloride

145-13-1

Pregnenolone

Pregnenolone hemioxylate

Conditions
ConditionsYield
Stage #1: oxalyl dichloride; Pregnenolone In diethyl ether at 20℃; for 18h;
Stage #2: With water In diethyl ether at 20℃; for 1h;
98%
With triethylamine; N,N-dimethyl-formamide In dichloromethane at 0 - 10℃; for 2h;36%
145-13-1

Pregnenolone

18162-48-6

tert-butyldimethylsilyl chloride

58701-45-4

1-((3S,8S,9S,10R,13S,14S,17S)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3-[(1,1-dimethylethyl)dimethylsilyloxy]-10,13-dimethyl-1H-cyclopenta[a]phenanthren-17-yl)ethanone

Conditions
ConditionsYield
Stage #1: Pregnenolone With 1H-imidazole In N,N-dimethyl-formamide for 0.333333h;
Stage #2: tert-butyldimethylsilyl chloride In N,N-dimethyl-formamide at 20℃; for 12h;
98%
145-13-1

Pregnenolone

3446-89-7

4-(Methylthio)benzaldehyde

(2E)-3-(4-(methylthio)phenyl)-1-((10R,13S)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3(β)-hydroxy-10,13-dimethyl-1H-cyclopenta[a]phenanthren-17(β)-yl)prop-2-en-1-one

Conditions
ConditionsYield
With potassium hydroxide In ethanol; water for 1h; Inert atmosphere;98%
39511-08-5

(E)-3-(2-furanyl)-2-propenal

145-13-1

Pregnenolone

(2E,4E)-5-(furan-2-yl)-1-((8S,9S,10R,13S,14S,17S)-3-hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)penta-2,4-dien-1-one

Conditions
ConditionsYield
With potassium hydroxide In ethanol; water for 1h; Inert atmosphere;98%
145-13-1

Pregnenolone

124-63-0

methanesulfonyl chloride

38759-50-1

3β-methanesulfonyloxypregn-5-en-20-one

Conditions
ConditionsYield
With pyridine at 20 - 25℃; for 4h; Inert atmosphere;97.2%
With pyridine at 20℃; for 23h;
With pyridine
With triethylamine In toluene
13154-24-0

triisopropylsilyl chloride

145-13-1

Pregnenolone

241139-90-2

3β-((triisopropylsilyl)oxy)pregn-5-en-20-one

Conditions
ConditionsYield
With 1H-imidazole In dichloromethane; N,N-dimethyl-formamide at 20℃; for 4h; Inert atmosphere;97%
With 1H-imidazole In dichloromethane; N,N-dimethyl-formamide at 25℃; for 24h;74%
145-13-1

Pregnenolone

60562-58-5

(E)-1-((3S,8S,9S,10R,13S,14S,17S)-3-hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethanone oxime

Conditions
ConditionsYield
With hydroxylamine hydrochloride; sodium acetate In methanol; water at 20℃; for 6h; Inert atmosphere; Reflux;97%
With hydroxylamine hydrochloride; sodium acetate In methanol; water for 6h; Reflux;97%
With hydroxylamine hydrochloride; sodium acetate In methanol; water for 6h; Reflux;97%
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    145-13-1

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    Pregnenolone

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 0.0-0.0/Kilogram

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    145-13-1

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    145-13-1

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    145-13-1

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    145-13-1

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    145-13-1

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    Business Type:Lab/Research institutions

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    Address:9/F, Unit 2 Changdi Torch Building, 259# WenSan Road, Xihu District, Hangzhou City 310012, P.R.China

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    145-13-1

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    Items Standard Result Appearance White crystalline powder White crystalline powder Melting Point

    Hangzhou Dingyan Chem Co., LTD. is located in the beautiful tourist city of hangzhou, is a comprehensive chemical enterprice which doing import and export business by its own comp

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    Business Type:Trading Company

    Tel:86-571-86465881,86-571-87157530,86-571-88025800

    Address:RM.1118,NO.1 Building, Baiyun Tower,Jianggan Area, Hangzhou city, China,310004

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    145-13-1

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    Jinan Finer Chemical Co., Ltd is professional to manufacture and R&D chemical intermediates, pharmaceutical intermediates and fine chemicals. Company locates in Jinan city new mate

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    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-531-88989536

    Address:New Material Industry Park, Jinan Ciyt, China

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    145-13-1

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    Business Type:Trading Company

    Tel:+8619831967063

    Address:Office1201#, Block C, Hanjie Headquarters International Plaza, Zhongbei Rd, Wuchang District, Wuhan

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    145-13-1

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    Business Type:Manufacturers

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    Address:Zhang zhe, guangzong county, xingtai city, hebei province

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    145-13-1

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    Located in Zhengdong New District,?Zhengzhou of Henan province, Henan Allgreen Chemical Co.,Ltd is a comprehensive high-tech modern enterprises integrating professional R&D, pro

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    Address:No 260 Dongming Road,Jinshui District

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    145-13-1

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    Kono Chem Co.,Ltd is a leading producer of standardized herbal extracts, natural active ingredients and APIs for pharmaceutical, health food and cosmetic industries. Annually, mo

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    Business Type:Other

    Tel:86-29-86107037-8015

    Address:No.11 Daqing Road,Lianhu District,Xi’an 710082,China

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    145-13-1

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    Founded in 2011, Amadis Chemical Company Limited is an innovative manufacturer of chemical products and technical service providers. Our business includes sales, manufacture, and s

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     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-571-89925085

    Address:Watts Cosine.No.166.Xiangmao Road.

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    145-13-1

    3β-Hydroxy-5-pregnen-20-one

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    Chemwill Asia co.,Ltd is one of the leading manufacturer in CHINA.Our main production base is located in Xuzhou industry park. We produce a wide range of organics including Active pharmaceutical ingredients(APIs), Veterinary, Indole derivatives, Aro

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     China (Mainland)  |  Contact Details

    Business Type:Manufacturers

    Tel:021-51086038

    Address:High-Tech Industrial park,Chemical Economical Development Zone,Xuzhou, Jiangsu-Province, P.R.China

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  • Casno:

    145-13-1

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    Welcome to Henan Sinotech! Sinotech Corporation has exceptional sourcing ability for chemicals used in Organic Fine Chemicals and APIs; Inorganic chemicals; Flame Retardants;OLED

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    Business Type:Other

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    145-13-1

    Pharmaceutical Intermediates Female Steroid Pregnenolone Hormone Powder CAS 145-13-1

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    Hubei Xinrunde Chemical Co., Ltd. dedicated to the development, production and marketing of chemicals which is specialized in Organic compounds; Active Pharmaceutical Ingredient(s)

  •  Hubei XinRunde Chemical Co., Ltd

     China (Mainland)  |  Contact Details

    Business Type:Other

    Tel:+8615102730682

    Address:No.43, Xinandu Industrial Park, East and West Lake District, Wuhan, Hubei, China

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    145-13-1

    TIANFU CHEM Pregnenolone

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    Welcome to Henan Tianfu Chemical Co., Ltd. Our company engages in noble metal catalysts, synthesis of electronic chemical materials and Pharmaceutical, Agrochemicals, Food Additive

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     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-371-55170693/55170694

    Address:Zhengzhou International Trade New Territory,Jinshui District,Zhengzhou ,China

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    145-13-1

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    Business Type:Trading Company

    Tel:+86-13111626072

    Address:Room 1710, Baoxin International Phase I, 19 Guanyun East Road, Zhuozhou, Hebei

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    145-13-1

    MSDS/COA Download

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    Business Type:Lab/Research institutions

    Tel:+86-29-86470566

    Address:Block A of Central Mansion, No.113 of Weiyang Rd, ETDZ, Xi'an, Shaanxi 710016, China

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    145-13-1

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     China (Mainland)  |  Contact Details

    Business Type:Trading Company

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    Address:A2705,Dong Yi Shi Qu,129# XinHua Road,WuHan,China

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    145-13-1

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    China (Mainland)  |  Contact Details

    Business Type:Trading Company

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    Address:18-1-802, Green Garden, Jianghan District, Wuhan 430023, China

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    145-13-1

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     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-21-52196435

    Address:No.2 Floor,No.979 Yunhan Rd,Nicheng,Pudong New Area,Shanghai,China

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    145-13-1

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    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:+86-25-58409506

    Address:11F, Building A1, No.288 North Zhongshan Road, Gulou District, Nanjing,210003, P.R.China.

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    145-13-1

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    Business Type:Trading Company

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    Address:High-tech Industrial Park,Tianmen city,Hubei province.

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    145-13-1

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    Business Type:Trading Company

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    145-13-1

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    Min.Order: 100 Gram

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    Business Type:Trading Company

    Tel:86-431-81915458

    Address:Room 302, 47 Changping Street, Chaoyang District, Changchun, Jilin Province,China

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    145-13-1

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     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+8613397160123

    Address:13th Floor, Tower B, Century Plaza, Zhongnan Road, Wuchang District, Wuhan, China.

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    145-13-1

    MSDS/COA Download

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     China (Mainland)  |  Contact Details

    Business Type:Trading Company

    Tel:+8619930503256

    Address:No.66, Yuhua West Road

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  • Casno:

    145-13-1

    Pregnenolone

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    We are a professional manufacturer and customizer of herbal and botanical ingredients,working with many research institutes, analytic laboratories, chemical and pharmaceutical comp

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     China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-28-85370565

    Address:No.8 Wuke West Second Road, Wuhou

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    145-13-1

    Pregnenolone CAS 145-13-1

    Min.Order: 1 Metric Ton

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    CUSTOMIZED LAB Chemtn Biological Technology Limited is one of the leading RC chemicals producer in china,we have advanced equipment and high technology,

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    China (Mainland)  |  Contact Details

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Chemistry

Molecule structure of Pregnenolone (CAS NO.145-13-1):

IUPAC Name: 1-[(3S,8S,9S,10R,13S,14S,17S)-3-Hydroxy-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethanone 
Molecular Weight: 316.47758 g/mol
Molecular Formula: C21H32O2 
Density: 1.09 g/cm3 
Melting Point: 188-190 °C
Boiling Point: 443.3 °C at 760 mmHg 
Flash Point: 188.9 °C
Index of Refraction: 1.549
Molar Refractivity: 92.35 cm3
Molar Volume: 290 cm3
Polarizability: 36.61×10-24 cm3
Surface Tension: 42.7 dyne/cm 
Enthalpy of Vaporization: 80.89 kJ/mol
Vapour Pressure: 1.02E-09 mmHg at 25 °C
XLogP3: 4.2
H-Bond Donor: 1
H-Bond Acceptor: 2
Rotatable Bond Count: 1
Tautomer Count: 3
Exact Mass: 316.24023
MonoIsotopic Mass: 316.24023
Topological Polar Surface Area: 37.3
Heavy Atom Count: 23
Canonical SMILES: CC(=O)C1CCC2C1(CCC3C2CC=C4C3(CCC(C4)O)C)C
Isomeric SMILES: CC(=O)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC=C4[C@@]3(CC[C@@H](C4)O))C
InChI: InChI=1S/C21H32O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h4,15-19,23H,5-12H2,1-3H3/t15-,16-,17+,18-,19-,20-,21+/m0/s1
InChIKey: ORNBQBCIOKFOEO-QGVNFLHTSA-N
EINECS: 205-647-4
Product Categories: Steroids; Steroids & Hormones - 13C & 2H; Biochemistry; Hydroxyketosteroids; Steroids (Others)

Uses

 Pregnenolone (CAS NO.145-13-1) is used for biochemical research. It is also used as steroid pharmaceutical intermediates and synthesis of steroid drugs.

Production

 Pregnenolone is made by cholesterol. This conversion involves hydroxylation at the side-chain at C20 and C22 positions, with cleavage of the side-chain. The enzyme performing this task is cytochrome P450scc, located in the mitochondria, and controlled by pituitary tropic hormones, such as ACTH, FSH, LH.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD intraperitoneal > 200mg/kg (200mg/kg)   Journal of Medicinal Chemistry. Vol. 11, Pg. 117, 1968.

Safety Profile

Safety Statements: 22-24/25 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3
RTECS: TU5560700

Specification

 Pregnenolone (CAS NO.145-13-1) is also named as 3-beta-Hydroxypregn-5-en-20-one ; 3beta-Hydroxypregn-5-en-20-one ; 5-Pregnen-3-beta-ol-20-one ; 5-Pregnen-3beta-ol-20-one ; Arthenolone ; Bina-Skin ; Enelone ; NSC 1616 ; Natolone ; Pregn-5-en-20-one, 3-hydroxy-, (3-beta)- ; Pregnenolona ; Pregnenolona [INN-Spanish] ; Pregnenolonum ; Pregnenolonum [INN-Latin] ; Pregnetan ; Pregneton ; Pregnolon ; Prenolon ; Regnosone ; Skinostelon ; UNII-73R90F7MQ8 ; delta5-Pregnenolone . Pregnenolone (CAS NO.145-13-1) is white to off-white powder. It is insoluble in water. Its esterified version, pregnenolone sulfate, is water-soluble.