|Molar mass||318.49 g·mol−1|
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Pregnanolone (3α-hydroxy-5β-pregnan-20-one or 3α,5β-tetrahydroprogesterone; sometimes abbreviated as 3α,5β-THP), also known as eltanolone (INN), is an endogenous neurosteroid that is biosynthesized from progesterone. It is a positive allosteric modulator of the GABAA receptor, as well as a negative allosteric modulator of the glycine receptor, and is known to have sedative, anxiolytic, anesthetic, and anticonvulsant effects. It was investigated for clinical use as a general anesthetic, but produced unwanted side effects such as convulsions on occasion, and for that reason was never marketed.
- Reddy DS (2003). "Pharmacology of endogenous neuroactive steroids". Crit Rev Neurobiol 15 (3-4): 197–234. PMID 15248811.
- Jürgen Schüttler; Helmut Schwilden (8 January 2008). Modern Anesthetics. Springer Science & Business Media. pp. 278–. ISBN 978-3-540-74806-9.
- Carl P, Høgskilde S, Lang-Jensen T et al. (October 1994). "Pharmacokinetics and pharmacodynamics of eltanolone (pregnanolone), a new steroid intravenous anaesthetic, in humans". Acta Anaesthesiol Scand 38 (7): 734–41. PMID 7839787.
- Norman Calvey; Norton Williams (21 January 2009). Principles and Practice of Pharmacology for Anaesthetists. John Wiley & Sons. pp. 110–. ISBN 978-1-4051-9484-6.
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