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H5002

Sigma-Aldrich

17α-Hydroxypregnenolone

Synonym(s):

3β,17α-Dihydroxy-5-pregnen-20-one, 5-Pregnene-3β,17α-diol-20-one

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About This Item

Empirical Formula (Hill Notation):
C21H32O3
CAS Number:
387-79-1
Molecular Weight:
332.48
EC Number:
206-862-6
MDL number:
MFCD00021129
UNSPSC Code:
41116107
PubChem Substance ID:
24895665
NACRES:
NA.77

Quality Level

100

SMILES string

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

InChI

1S/C21H32O3/c1-13(22)21(24)11-8-18-16-5-4-14-12-15(23)6-9-19(14,2)17(16)7-10-20(18,21)3/h4,15-18,23-24H,5-12H2,1-3H3

InChI key

JERGUCIJOXJXHF-UHFFFAOYSA-N

General description

17α-hydroxypregnenolone is a derived from pregnenolone.

Application

17α-hydroxypregnenolone has been used as a substrate for the enzyme 3β‐hydroxysteroid dehydrogenase (3β‐HSD) expressed in COS1 cells.

Biochem/physiol Actions

17α-hydroxypregnenolone acts as a precursor for cortisol and sex steroids.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Teppei Koyama et al.
Annals of the New York Academy of Sciences, 1163, 444-447 (2009-05-22)
We recently identified 7alpha-hydroxypregnenolone as a novel amphibian neurosteroid stimulating locomotor activity in newts. Because male newts show marked diurnal changes in locomotor activity, we hypothesized that 7alpha-hydroxypregnenolone may be a key factor for the induction of diurnal changes in
Kazuyoshi Tsutsui et al.
General and comparative endocrinology, 168(2), 275-279 (2010-02-09)
We now know that steroids can be synthesized de novo by the brain and the peripheral nervous system. Such steroids are called neurosteroids and de novo neurosteroidogenesis from cholesterol is a conserved property of vertebrate brains. Our studies over the
Kazuyoshi Tsutsui et al.
General and comparative endocrinology, 163(1-2), 117-122 (2009-04-14)
The discovery of two novel avian neurosteroids in the quail brain, 7alpha- and 7beta-hydroxypregnenolone is described. Intracerebroventricular administration of 7alpha-hydroxypregnenolone, but not 7beta-hydroxypregnenolone was found to stimulate locomotor activity of male quail when spontaneous nocturnal activity is low. Diurnal changes
Kazuyoshi Tsutsui et al.
General and comparative endocrinology, 176(3), 440-447 (2011-12-06)
Seasonally-breeding amphibians have served as excellent animal models to investigate the biosynthesis and biological actions of neurosteroids. Previous studies have demonstrated that the brain of amphibians possesses key steroidogenic enzymes and produces pregnenolone, a precursor of steroid hormones, and other
Tamara S Hannon et al.
Journal of pediatric and adolescent gynecology, 25(1), 82-85 (2011-11-18)
Little is known about racial differences in androgen levels among obese children. The objective of this pilot study was to compare basal and stimulated androgen levels in a cross-sectional sample of obese black and white pubertal females. STUDY DESIGN, SETTING
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