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Sigma-Aldrich

3α,21-Dihydroxy-5α-pregnan-20-one

≥95%

Sinônimo(s):

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 (Notação de Hill):
C21H34O3
Número CAS:
Peso molecular:
334.49
Número CE:
Número MDL:
Código UNSPSC:
12352200
ID de substância PubChem:
NACRES:
NA.77

Nível de qualidade

Ensaio

≥95%

Formulário

powder

cadeia de caracteres 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

chave InChI

CYKYBWRSLLXBOW-GDYGHMJCSA-N

Descrição geral

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.

Aplicação

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
  • to test its effect on the spike-wave discharges (SWD) finasteride-treated rats
  • in electrophysiological studies with dentate granule cells (DGCs) post controlled cortical impact (CCI) -induced brain injury

Ações bioquímicas/fisiológicas

3α,21-Dihydroxy-5α-pregnan-20-one (THDOC) is a positive allosteric modulator of the γ-aminobutyric acid A receptor (GABAA). By modulating GABAA receptor, THDOC allows sustained hyperpolarization and an increase in chloride influx and membrane conductance in neurons. THDOC, thus modulates neuronal excitability. It possesses anxiolytic, anticonvulsant and sedative properties. 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. However, elevated levels are reported in depression. THDOC may have an indirect role in the hypothalamic-pituitary–adrenal (HPA) axis activation during acute stress.

Características e benefícios

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 classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)


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Visite a Biblioteca de Documentos

Junn-Liang Chang et al.
American journal of physiology. Renal physiology, 299(1), F43-F48 (2010-04-02)
Recently, we demonstrated a chronic neurosteroid-dependent inhibition of activity-dependent spinal reflex potentiation (SRP), but it remains unclear whether neurosteroids acutely modulate SRP induction. This study shows progesterone as well as two of its 3alpha,5alpha-derivatives, allopregnalonone and 3alpha,5alpha-tetrahydrodeoxycorticosterone (THDOC), to be
Doodipala S Reddy et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 22(9), 3795-3805 (2002-04-30)
Stress affects seizure susceptibility in animals and humans, but the underlying mechanisms are obscure. Here, we provide evidence that GABA(A) receptor-modulating neurosteroids derived from deoxycorticosterone (DOC) play a role in stress-related changes in seizure control. DOC, an adrenal steroid whose
Antonella Tuveri et al.
Epilepsia, 49(7), 1221-1229 (2008-03-08)
Seizure exacerbation in catamenial epilepsy (CE) is associated with the decrease in progesterone secretion and increase in estradiol secretion during the premenstrual period. Moreover, experimental evidence suggests that tetrahydrodeoxycorticosterone (THDOC), a positive modulator of the type A receptor for gamma-aminobutyric
Roland Baur et al.
Journal of neurochemistry, 111(5), 1172-1181 (2009-09-22)
Delta (delta) subunit containing GABA(A) receptors are expressed extra-synaptically and mediate tonic inhibition. In cerebellar granule cells, they often form a receptor together with alpha(6) subunits. We were interested to determine the architecture of these receptors. We predefined the subunit
Jhimly Sarkar et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 31(50), 18198-18210 (2011-12-16)
The hypothalamic-pituitary-adrenal (HPA) axis, which mediates the body's response to stress, is largely under GABAergic control. Here we demonstrate that corticotropin-releasing hormone (CRH) neurons are modulated by the stress-derived neurosteroid, tetrahydrodeoxycorticosterone (THDOC), acting on δ subunit-containing GABA(A) receptors (GABA(A)Rs). Under

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