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Merck

P2016

Sigma-Aldrich

3α,21-Dihydroxy-5α-pregnan-20-one

≥95%

Sinónimos:

21-Hydroxyallopregnanolone, 5α-Pregnane-3α,21-diol-20-one, 5α-THDOC, Allopregnane-3α,21-diol-20-one, Allotetrahydrodeoxycorticosterone

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About This Item

Fórmula empírica (notación de Hill):
C21H34O3
Número de CAS:
Peso molecular:
334.49
Número CE:
Número MDL:
Código UNSPSC:
12352200
ID de la sustancia en PubChem:
NACRES:
NA.77
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Nivel de calidad

Ensayo

≥95%

Formulario

powder

cadena SMILES

[H][C@@]12CC[C@@]3([H])[C@]4([H])CC[C@H](C(=O)CO)[C@@]4(C)CC[C@]3([H])[C@@]1(C)CC[C@@H](O)C2

InChI

1S/C21H34O3/c1-20-9-7-14(23)11-13(20)3-4-15-16-5-6-18(19(24)12-22)21(16,2)10-8-17(15)20/h13-18,22-23H,3-12H2,1-2H3/t13-,14+,15-,16-,17-,18+,20-,21-/m0/s1

Clave InChI

CYKYBWRSLLXBOW-GDYGHMJCSA-N

Descripción general

3α21-Dihydroxy-5α-pregnan-20-one (THDOC) is a neurosteroid. It is synthesized in a two-step process from deoxycorticosterone (DOC) via 5α-dihydrodeoxycorticosterone (DHDOC) intermediate with enzymes 5α-reductase and 3α-hydroxysteroid oxidoreductase catalyzing these steps respectively.[1]

Aplicación

3α,21-Dihydroxy-5α-pregnan-20-one (THDOC) has been used:
  • as an γ-aminobutyric acid type A receptor (γ-GABAA) agonist in voltage-clamp measurements studies in Xenopus oocytes[2]
  • to test its effect on the spike-wave discharges (SWD) finasteride-treated rats[3]
  • in electrophysiological studies with dentate granule cells (DGCs) post controlled cortical impact (CCI) -induced brain injury[4]

Acciones bioquímicas o fisiológicas

3α,21-Dihydroxy-5α-pregnan-20-one (THDOC) is a positive allosteric modulator of the γ-aminobutyric acid A receptor (GABAA).[1] By modulating GABAA receptor, THDOC allows sustained hyperpolarization and an increase in chloride influx and membrane conductance in neurons.[5] THDOC, thus modulates neuronal excitability.[6] It possesses anxiolytic, anticonvulsant and sedative properties.[1] The levels of THDOC show variation in different physiological states. A low THDOC level in the mensural phase is speculated to play a role in the pathogenesis of catamenial epilepsy (CE) in women.[7] However, elevated levels are reported in depression.[6] THDOC may have an indirect role in the hypothalamic-pituitary–adrenal (HPA) axis activation during acute stress.[5]

Características y beneficios

This compound is a featured product for Neuroscience research. Click here to discover more featured Neuroscience products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)


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Visite la Librería de documentos

Patrizia Porcu et al.
Alcoholism, clinical and experimental research, 34(3), 432-442 (2009-12-24)
Acute ethanol administration increases plasma and brain levels of progesterone and deoxycorticosterone-derived neuroactive steroids (3alpha,5alpha)-3-hydroxypregnan-20-one (3alpha,5alpha-THP) and (3alpha,5alpha)-3,21-dihydroxypregnan-20-one (3alpha,5alpha-THDOC) in rats. However, little is known about ethanol effects on GABAergic neuroactive steroids in mice, nonhuman primates, or humans. We investigated
D Eser et al.
Neuroscience, 138(3), 1041-1048 (2005-11-29)
Certain neuroactive steroids modulate ligand-gated ion channels via non-genomic mechanisms. Especially 3alpha-reduced pregnane steroids are potent positive allosteric modulators of the GABA type A-receptor. During major depression there is a dysequilibrium of 3alpha-reduced neuroactive steroids, which is corrected by clinically
Doodipala S Reddy
Trends in pharmacological sciences, 24(3), 103-106 (2003-03-12)
Endogenous neurosteroids affect brain excitability during physiological states such as pregnancy and the menstrual cycle, and during conditions of acute and chronic stress. The neurosteroid allotetrahydrodeoxycorticosterone (THDOC) is an allosteric modulator of the GABA(A) receptor. Although the role of THDOC
Lihua Wang et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 28(47), 12445-12452 (2008-11-21)
The sympathetic tone is primarily defined by the level of activity of the sympathetic preganglionic neurons. We report a novel inhibitory influence on sympathetic activity, that of tonic GABAergic inhibition which could have a profound global effect on sympathetic outflow.
Marco Bortolato et al.
Neuropharmacology, 60(7-8), 1301-1308 (2011-01-25)
Isolation rearing (IR), a well-established rat model of early chronic psychosocial stress, engenders marked behavioral alterations related to changes of dopamine (DA) neurotransmission in cortical and subcortical brain regions. Stress-induced shifts in γ-aminobutyric acid (GABA)-ergic signaling have been implicated in

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