SHEET /m/meprobamate · PubChem CID 4064 · CAS 57-53-4 · REV 2026.07
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Meprobamate
from sourceC9H18N2O4 · 218.25 g/mol
Amepromat · Carbaxin · Equanil · Meproban
What is Meprobamate?
One of the first blockbuster anti-anxiety medicines, sold as Miltown in the 1950s, before the benzodiazepines largely replaced it. from source
CategoryPrescription medicine
Chemical familyEsters
Fig. 1 · 2D structure RDKit
SMILES
CCCC(C)(COC(=O)N)COC(=O)NWhere 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
- 794 mg/kg · low toxicity
- Species
- rat
- 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
794 mg/kg · low toxicity · LD50 rat oral from source
2 more reported values
- 750 mg/kgLD50 · oral · mouse
- 410 mg/kgLD50 · other · rat
WarningIrritantH302from source
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Where Meprobamate leads
Relatedcomputed