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SHEET /m/allopregnanolone · PubChem CID 92786 · CAS 516-54-1 · REV 2026.07

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Allopregnanolone

from source

C21H34O2 · 318.5 g/mol

brexanolone · brexanolona

What is Allopregnanolone?

A steroid the brain makes from progesterone that calms nerve activity. Its synthetic version is the first drug approved for postpartum depression. from source

CategoryBody
Chemical familyAlcoholsKetones
LeaderboardsBiggest

Fig. 1 · 2D structure RDKit

SMILESCC(=O)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC[C@@H]4[C@@]3(CC[C@H](C4)O)C)C

Where you'll find it

Your own body makes this one. It is not an ingredient you buy. See the rest of the body group.

Keep roaming

Where Allopregnanolone leads

Relatedcomputed
Pregnenolone53% similarBoth carry an alcohol and a ketone group.Progesterone47% similarBoth carry a ketone group.Dihydrotestosterone44% similarBoth carry an alcohol and a ketone group.Ursodeoxycholic acid39% similarBoth carry an alcohol group.

Sources & methodology

PubChem CID
92786
Wikidata
Q2482223
Structure
PubChem → RDKit
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