ChemicalBook > CAS DataBase List > Pregnenolone

Pregnenolone

Product Name
Pregnenolone
CAS No.
145-13-1
Chemical Name
Pregnenolone
Synonyms
prenenolone;5-pregnen-3B-ol-20-one;3β-Hydroxypregn-5-en-20-one;DELTA5-PREGNEN-3BETA-OL-20-ONE;5-Preg;ZK-5553;-20-one;prenolon;pregnolon;nen-3β-oL
CBNumber
CB1684326
Molecular Formula
C21H32O2
Formula Weight
316.48
MOL File
145-13-1.mol
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Pregnenolone Property

Melting point:
188-190 °C
alpha 
28.5 º (c=1, EtOH)
Boiling point:
395.89°C (rough estimate)
Density 
1.0382 (rough estimate)
vapor pressure 
0-0Pa at 20-25℃
refractive index 
1.5344 (estimate)
Flash point:
9℃
storage temp. 
Refrigerator
solubility 
ethanol: soluble10mg/mL, clear, colorless to faintly yellow
form 
Powder
pka
15.00±0.70(Predicted)
color 
White to off-white
Water Solubility 
41mg/L(room temperature)
Merck 
7733
BRN 
2059026
InChIKey
ORNBQBCIOKFOEO-QGVNFLHTSA-N
LogP
4.4 at 20℃
CAS DataBase Reference
145-13-1(CAS DataBase Reference)
NIST Chemistry Reference
Pregnenolone(145-13-1)
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Safety

Safety Statements 
22-24/25
RIDADR 
UN 1648 3 / PGII
WGK Germany 
3
RTECS 
TU5560700
HS Code 
29372900
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

H319Causes serious eye irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
P9129
Product name
5-Pregnen-3β-ol-20-one
Purity
≥98%
Packaging
1g
Price
$31.62
Updated
2024/03/01
Sigma-Aldrich
Product number
P-104
Product name
Pregnenolone solution
Purity
100?μg/mL in acetonitrile, certified reference material, Cerilliant?
Packaging
1mL
Price
$70.7
Updated
2024/03/01
Sigma-Aldrich
Product number
PHR2564
Product name
Pregnenolone
Purity
Pharmaceutical Secondary Standard; Certified Reference Material
Packaging
100MG
Price
$583
Updated
2022/05/15
Cayman Chemical
Product number
19864
Product name
Pregnenolone
Purity
≥98%
Packaging
500mg
Price
$32
Updated
2024/03/01
Cayman Chemical
Product number
19864
Product name
Pregnenolone
Purity
≥98%
Packaging
1g
Price
$40
Updated
2024/03/01
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Pregnenolone Chemical Properties,Usage,Production

Description

Pregnenolone serves as the common precursor in the formation of the adrenocorticoids and other steroid hormones. This C21 steroid is converted via enzymatic oxidations and isomerization of the double bond to a number of physiologically active C21 steroids, including the female sex hormone progesterone and the adrenocorticoids hydrocortisone (cortisol), corticosterone, and aldosterone. Oxidative cleavage of the two-carbon side chain of pregnenolone and subsequent enzymatic oxidations and isomerization lead to C19 steroids, including the androgens testosterone and dihydrotestosterone. The final group of steroids, the C18 female sex hormones, are derived from oxidative aromatization of the A ring of androgens to produce estrogens.

Description

Pregnenolone is a natural steroid hormone that serves as a precursor for a wide range of steroids, including mineralocorticoids, glucocorticoids, androgens, and estrogens. Pregnenolone sulfate modulates NMDA receptor responses to exogenously applied glutamate and stimulates transient receptor potential melastatin 3 (TRPM3).

Chemical Properties

white to off-white powder

Uses

glucocortcoid, antiinflammatory

Uses

Pregnenolone is a steroid hormone involved in the steroidogenesis of progesterone, mineralocorticoids, glucocorticoids, androgens, and estrogens. As such it is a prohormone. Pregnenolone is a GABAA an tagonist and increases neurogenesis in the hippocampus. It is a modulator of cytochrome P 450-3A

Definition

ChEBI: A 20-oxo steroid that is pregn-5-ene substituted by a beta-hydroxy group at position 3 and an oxo group at position 20.

General Description

Pregnenolone is an endogenous steroid hormone involved in the biological synthesis of other hormones. Pregnenolone is monitored as an ancillary test for congenital adrenal hyperplasia (CAH), particularly in situations where diagnosis of 21-hydroxylase and 11-hydroxylase deficiency has been ruled out. This Certified Spiking Solution? is suitable for use in LC-MS/MS testing methods as a starting material in the preparation of calibrators, controls and linearity standards.

in vitro

pregnenolone is the precursor from which almost all of the other steroid hormones are made, including dhea, testosterone, progesterone, the estrogens and cortisol. pregnenolone also operates as a powerful neurosteroid in the brain, which modulates the transmission of messages from neuron to neuron and strongly influencing learning and memory processes [1].

in vivo

the ability of pregnenolone sulfate derivatives (pregs) to modulate the age-induced learning impairment was tested in 16- month-old mice using the step-down type of passive avoidance. decreased step-down latency was observed in the passive avoidance task in 16-month-old mice compared to 3-month-old mice, revealing retention deficits in old mice. pretraining injections of pregs dose-dependently improved the 24 h delay retention performances in this task in old mice [1].

References

[1] vallée m, mayo w, le moal m. role of pregnenolone, dehydroepiandrosterone and their sulfate esters on learning and memory in cognitive aging. brain res brain res rev. 2001 nov;37(1-3):301-12.

Pregnenolone Preparation Products And Raw materials

Raw materials

16-Dehydropregnenolone

Preparation Products

Progesterone Finasteride
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Pregnenolone Suppliers

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View Lastest Price from Pregnenolone manufacturers

Shanghai Affida new material science and technology center
Product
Pregnenolone 145-13-1
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99
Supply Ability
50000KG/month
Release date
2024-04-25
Hong Kong Excellence Biotechnology Co., Ltd.
Product
Pregnenolone 145-13-1
Price
US $100.00/kg
Min. Order
1kg
Purity
99.9%
Supply Ability
20tons
Release date
2023-10-12
Hebei Kangcang new material Technology Co., LTD
Product
Pregnenolone 145-13-1
Price
US $90.00-80.00/kg
Min. Order
0.10000000149011612kg
Purity
min99%
Supply Ability
100 tons
Release date
2024-03-20

145-13-1, PregnenoloneRelated Search:

PREGNENOLONE ACETATE Progesterone Gestonorone Gestrinone Gestodene (Z)-Guggulsterone 5BETA-PREGNANE-3ALPHA,20ALPHA-DIOL Eltanolone GUGGULSTERONE E (3β,9β,10α)-3-Hydroxy-pregna-5,7-dien-20-one 16-Dehydropregnenolone acetate Trenbolone PREGNENOLONE SULFATE SODIUM SALT PREGNENOLONE-17ALPHA,21,21,21-D4,Pregnenolone-17α,21,21,21-D4 Pregnenolone-[20,21-13C2, 16,16-d2] 5-Pregnen-3β-ol-20-one-17α?21?21?21-d4 3-Methyl Ether Pregnenolone-[20,21-13C2, 16,16-D2] Pregnenolone-2,2,4,4-d4

  • DELTA5-PREGNEN-3BETA-OL-20-ONE
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  • 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
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  • 3β-hydroxy-pregn-5-ene-20-one
  • PREGNENOLONE(RG)
  • PREGNENOLONE(3BETA-HYDROXYPREGN-5-EN-20-ONE)
  • Progeserone
  • 3β-Hydroxypregn-5-en-20-one
  • 4-(4-methylphenyl)-3,5-diphenyl-1,2,4-triazole
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  • 145-13-1