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Substance Name: Pregnenolone [INN:BAN]
RN: 145-13-1
UNII: 73R90F7MQ8
InChIKey: ORNBQBCIOKFOEO-QGVNFLHTSA-N

Note

  • A 21-carbon steroid, derived from CHOLESTEROL and found in steroid hormone-producing tissues. Pregnenolone is the precursor to GONADAL STEROID HORMONES and the adrenal CORTICOSTEROIDS.

Molecular Formula

  • C21-H32-O2

Molecular Weight

  • 316.4818
 

Classification Codes

  • Drug / Therapeutic Agent
  • Hormone
  • Reproductive Effect
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Names and Synonyms

Name of Substance

  • Pregnenolone
  • Pregnenolone [INN:BAN]

MeSH Heading

  • Pregnenolone

Synonyms

  • 3-beta-Hydroxypregn-5-en-20-one
  • 3beta-Hydroxypregn-5-en-20-one
  • 5-Pregnen-3-beta-ol-20-one
  • 5-Pregnen-3beta-ol-20-one
  • Arthenolone
  • Bina-Skin
  • delta5-Pregnenolone
  • EINECS 205-647-4
  • Enelone
  • Natolone
  • NSC 1616
  • Pregn-5-en-20-one, 3-hydroxy-, (3-beta)-
  • Pregneninolone
  • Pregnenolona
  • Pregnenolona [INN-Spanish]
  • Pregnenolone
  • Pregnenolonum
  • Pregnenolonum [INN-Latin]
  • Pregnetan
  • Pregneton
  • Pregnolon
  • Prenolon
  • Regnosone
  • Skinostelon
  • UNII-73R90F7MQ8

Systematic Names

  • Pregn-5-en-20-one, 3-beta-hydroxy-
  • Pregn-5-en-20-one, 3-hydroxy-, (3beta)-
  • Pregn-5-en-20-one, 3beta-hydroxy- (8CI)
  • Pregnenolone

Registry Numbers

CAS Registry Number

  • 145-13-1

FDA UNII

  • 73R90F7MQ8

Other Registry Number

  • 116907-59-6

System Generated Number

  • 0000145131

Structure Descriptors

InChI

1S/C21H32O2/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/h4,15-19,23H,5-12H2,1-3H3/t15-,16-,17+,18-,19-,20-,21+/m0/s1

InChIKey

ORNBQBCIOKFOEO-QGVNFLHTSA-N

Smiles

[C@H]12[C@H]([C@H]3[C@](CC2)([C@H](CC3)C(=O)C)C)CC=C2[C@@]1(CC[C@@H](C2)O)C

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD intraperitoneal > 200mg/kg (200mg/kg)   Journal of Medicinal Chemistry. Vol. 11, Pg. 117, 1968.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 192 deg C   EXP
log P (octanol-water) 4.22 (none)   EXP
Water Solubility 7.06 mg/L 37 EXP
Vapor Pressure 1.03E-08 mm Hg 25 EST
Henry's Law Constant 1.17E-08 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 1.20E-10 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.