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P8129

Sigma-Aldrich

5β-Pregnan-3α-ol-20-one

Synonyme(s) :

3α-Hydroxy-5β-pregnan-20-one, 3α-Hydroxy-5β-tetrahydroprogesterone, Pregnanolone

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About This Item

Formule empirique (notation de Hill):
C21H34O2
Numéro CAS:
128-20-1
Poids moléculaire :
318.49
Numéro MDL:
MFCD00067137
Code UNSPSC :
12352202
ID de substance PubChem :
24898909
Nomenclature NACRES :
NA.77

Source biologique

synthetic (organic)

Pureté

≥98% (TLC)

Forme

powder

Solubilité

chloroform: 50 mg/mL, clear, colorless

Conditions d'expédition

ambient

Température de stockage

room temp

Chaîne SMILES 

[H]C12CCC3C4CCC(C(C)=O)C4(C)CCC3C1(C)CC[C@H](O)C2

InChI

1S/C21H34O2/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/h14-19,23H,4-12H2,1-3H3

Clé InChI

AURFZBICLPNKBZ-UHFFFAOYSA-N

Informations sur le gène

rat ... Gabra2(29706)

Actions biochimiques/physiologiques

5β-Pregnan-3α-ol-20-one or pregnanolone is a neurosteroid that acts as a positive allosteric modulator (PAMs) of γ-aminobutyric acid A receptors (GABAARs). It mediates anti-convulsive, anxiolytic and sedative effects. Pregnanolone inhibits γ-aminobutyric acid C receptor (GABAC) receptor-based response and favors GABAA receptor-mediated currents.

Pictogrammes

Health hazard
GHS08

Mention d'avertissement

Warning

Mentions de danger

H351

Conseils de prudence

P281

Classification des risques

Carc. 2

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Équipement de protection individuelle

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

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P Li et al.
British journal of pharmacology, 171(23), 5446-5457 (2014-08-15)
Neurosteroids potentiate responses of the GABAA receptor to the endogenous agonist GABA. Here, we examined the ability of neurosteroids to potentiate responses to the allosteric activators etomidate, pentobarbital and propofol. Electrophysiological assays were conducted on rat α1β2γ2L GABAA receptors expressed
Selwyn S Jayakar et al.
The Journal of biological chemistry, 295(33), 11495-11512 (2020-06-17)
Allopregnanolone (3α5α-P), pregnanolone, and their synthetic derivatives are potent positive allosteric modulators (PAMs) of GABAA receptors (GABAARs) with in vivo anesthetic, anxiolytic, and anti-convulsant effects. Mutational analysis, photoaffinity labeling, and structural studies have provided evidence for intersubunit and intrasubunit steroid-binding
Eva Innala et al.
Acta obstetricia et gynecologica Scandinavica, 91(12), 1445-1452 (2012-08-29)
To measure serum concentrations of progesterone, estradiol and 5α- and 5β-reduced progesterone metabolites in the follicular and luteal phases of the menstrual cycle in women with latent acute intermittent porphyria and manifest acute intermittent porphyria in comparison with healthy control
Jane Evans et al.
Neuropharmacology, 63(8), 1315-1326 (2012-09-04)
Chronic stress has been implicated as a causal factor in depression and anxiety, and is associated with neuroendocrine dysfunction and impaired hippocampal neurogenesis. The neurosteroid allopregnanolone (3α,5α-THP; ALLO) has been shown to be reduced in depressed patients. ALLO is "stress
Barbora Slavíková et al.
Journal of medicinal chemistry, 56(6), 2323-2336 (2013-02-21)
(25R)-3β-Hydroxy-5α-spirostan-12-one (hecogenin) and 11α-hydroxypregn-4-ene-3,20-dione (11α-hydroxyprogesterone) were used as starting materials for the synthesis of a series of 11- and 12-substituted derivatives of 5ξ-pregnanolone (3α-hydroxy-5α-pregnan-20-one and 3α-hydroxy-5β-pregnan-20-one), the principal neurosteroid acting via γ-aminobutyric acid (GABA). These analogues were designed to study
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