SHEET /m/dextromethorphan · PubChem CID 5360696 · CAS 125-71-3 · REV 2026.07
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Dextromethorphan
from sourceC18H25NO · 271.4 g/mol
d-methorphan · DM · delta-methorphan · Albutussin
Also sold as Robitussin, Delsym from source
What is Dextromethorphan?
The cough suppressant marked DM on cold medicine boxes, related to morphine in structure but not in its effect on pain. from source
CategoryOTC medicine
Fig. 1 · 2D structure RDKit
SMILES
CN1CC[C@@]23CCCC[C@@H]2[C@@H]1CC4=C3C=C(C=C4)OCWhere you'll find it
Sold over the counter, without a prescription. Sold as Robitussin, Delsym. See the rest of the otc medicine group.
Relative acute toxicity from source
Animal study data · LD50
- Reported LD50
- 201 mg/kg · moderately toxic
- 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
201 mg/kg · moderately toxic · LD50 mouse oral from source
1 more reported value
- 112 mg/kgLD50 · other · mouse
DangerToxicH301from source
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