SHEET /m/triazolam · PubChem CID 5556 · CAS 28911-01-5 · REV 2026.07

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Triazolam

from source

C17H12Cl2N4 · 343.2 g/mol

Halcion · Apo Triazo · Clorazolam · Novidorm

What is Triazolam?

A short-acting benzodiazepine sleep medicine sold as Halcion, one of the fastest to clear from the body in its class. from source

CategoryPrescription medicine

Chemical familyAromatics Halogenated

LeaderboardsBiggest Deadliest

Fig. 1 · 2D structure RDKit

SMILESCC1=NN=C2N1C3=C(C=C(C=C3)Cl)C(=NC2)C4=CC=CC=C4Cl

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: 5,000 mg/kg · very 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

5,000 mg/kg · very low toxicity · LD50 rat oral from source

1 more reported value

1,000 mg/kgLD50 · oral · mouse

DangerHealth hazardH360, H362from source

Keep roaming

Where Triazolam leads

Relatedcomputed

Alprazolam77% similarBoth carry an aromatic ring and a halogen atom.Midazolam53% similarBoth carry an aromatic ring and a halogen atom.Diazepam43% similarBoth carry an aromatic ring and a halogen atom.

Sources & methodology

PubChem CID: 5556
Wikidata: Q412143
Structure: PubChem → RDKit
LD50: PubChem
Similar molecules: MoleculeFinder fingerprint similarity
Data refreshed: October 19, 2026

How MoleculeFinder sources and labels its data