G7795 Sigma-Aldrich



Synonym: 3α-Hydroxy-3β-methyl-5α-pregnan-20-one, CCD 1042

  • CAS Number 38398-32-2

  • Empirical Formula (Hill Notation) C22H36O2

  • Molecular Weight 332.52

  •  MDL number MFCD00945298

  •  PubChem Substance ID 24724496

  •  NACRES NA.77



Related Categories Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology, Cell Signaling and Neuroscience, Excitatory Amino Acids,
Quality Level   100
assay   (The product is pure based on elemental analysis, NMR, MS, optical rotation and melting point.)
  ≥98% (HPLC)
form   solid
color   white
solubility   DMSO: ≥2 mg/mL
  H2O: insoluble
storage temp.   2-8°C
SMILES string   [H][C@@]12CC[C@@]3([H])[C@]4([H])CC[C@H](C(C)=O)[C@@]4(C)CC[C@]3([H])[C@@]1(C)CC[C@@](C)(O)C2
InChI   1S/C22H36O2/c1-14(23)17-7-8-18-16-6-5-15-13-20(2,24)11-12-21(15,3)19(16)9-10-22(17,18)4/h15-19,24H,5-13H2,1-4H3/t15-,16-,17+,18-,19-,20+,21-,22+/m0/s1
Gene Information   human ... GABRA1(2554), GABRA2(2555), GABRA3(2556), GABRA4(2557), GABRA5(2558), GABRA6(2559), GABRB1(2560), GABRB2(2561), GABRB3(2562), GABRD(2563), GABRE(2564), GABRG1(2565), GABRG2(2566), GABRG3(2567), GABRP(2568), GABRQ(55879)
mouse ... Gabrg2(14406)



5, 25 mg in glass bottle

Biochem/physiol Actions

Ganaxolone (3alpha-hydroxy-3beta-methyl-5alpha-pregnane-20-one) is a positive allosteric modulator of the GABAA receptor subtype; synthetic analog of the endogenous neurosteroid allopregnanolone; effective against chemically induced seizures in rats and mice. Ganaxolone is an orally active analog of allopregnanolone that is not converted to the hormonally active 3-keto form. The enhanced anticonvulsant potency of ganaxolone after neurosteroid withdrawal supports the use of ganaxolone as a specific treatment for perimenstrual catamenial epilepsy.

Features and Benefits

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Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Discover Bioactive Small Molecules for Neuroscience

The nervous system, comprised of the brain and spinal cord (central nervous system, or CNS) and network of nerves that connects the CNS to the rest of the body (peripheral nervous system, or PNS) is ...
Keywords: Bioactive small molecules, Central Nervous System, Diseases, Metabolism, Neurodegenerative Diseases, Neuroscience, Neurotransmission, Neurotransmitters

GABAA Receptors

GABAA receptors are responsible for the majority of neuronal inhibition in the mammalian CNS. Agonist activation results in the opening of their integral anion channel, generally leading to hyperpola...
Keywords: Anticonvulsants, Central Nervous System, Cloning, Gene expression, Ligands, Neurotransmitters, Phosphorylations, Schizophrenia, Transduction

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