SHEET /m/pethidine · PubChem CID 4058 · CAS 57-42-1 · REV 2026.07
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Pethidine
from sourceC15H21NO2 · 247.33 g/mol
meperidine · Isonipecaine · Meperidol · Nemerol
What is Pethidine?
An older opioid painkiller, known as meperidine in the United States and sold as Demerol. Pethidine (C15H21NO2, 247 g/mol) is an opioid dispensed on prescription. from source
CategoryPrescription medicine
Fig. 1 · 2D structure RDKit
SMILES
CCOC(=O)C1(CCN(CC1)C)C2=CC=CC=C2Where 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
- 162 mg/kg · moderately toxic
- 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
162 mg/kg · moderately toxic · LD50 rat oral from source
3 more reported values
- 170 mg/kgLD50 · oral · rat
- 87 mg/kgLD50 · other · rat
- 113 mg/kgLD50 · other · rat
DangerToxicIrritantHealth hazardH301, H317, H331, H334from source
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Where Pethidine leads
Relatedcomputed