SHEET /m/valproate · PubChem CID 3121 · CAS 99-66-1 · REV 2026.07

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Valproate

from source

C8H16O2 · 144.21 g/mol

valproic acid · n-DPA · DPA · dipropylacetic acid

What is Valproate?

An anticonvulsant used for epilepsy, bipolar disorder and migraine prevention. It carries strict restrictions in pregnancy. from source

CategoryPrescription medicine

Chemical familyCarboxylic Acids

LeaderboardsBiggest Deadliest

Fig. 1 · 2D structure RDKit

SMILESCCCC(CCC)C(=O)O

Where you'll find it

Dispensed on prescription, not sold on a shelf. See the rest of the prescription medicine group.

Relative acute toxicity from source

Animal study data · LD50

Reported LD50: 1,098 mg/kg · low toxicity
Species: mouse
Route: oral

An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.

Toxicity & hazards

Toxicity · LD50

1,098 mg/kg · low toxicity · LD50 mouse oral from source

3 more reported values

824 mg/kgLD50 · oral · guinea pig
470 mg/kgLD50 · other · mouse
860 mg/kgLD50 · other · mouse

DangerCorrosiveIrritantHealth hazardH302, H315, H318, H319, H335, H336, H360, H362, H370, H372from source

Keep roaming

Where Valproate leads

Relatedcomputed

Butyric acid38% similarBoth carry a carboxylic acid group.Propionic acid37% similarBoth carry a carboxylic acid group.Lactic acid35% similarBoth carry a carboxylic acid group.

Sources & methodology

PubChem CID: 3121
Wikidata: Q240642
Structure: PubChem → RDKit
LD50: PubChem
Similar molecules: MoleculeFinder fingerprint similarity
Data refreshed: September 13, 2026

How MoleculeFinder sources and labels its data