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SHEET /m/atenolol · PubChem CID 2249 · CAS 29122-68-7 · REV 2026.07

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Atenolol

from source

C14H22N2O3 · 266.34 g/mol

Duratenol · Blokium · Tensimin · Corotenol

What is Atenolol?

A beta blocker sold as Tenormin, for decades one of the most prescribed heart medicines. It mostly targets the heart's beta-1 receptors. from source

CategoryPrescription medicine
Chemical familyAlcoholsAminesAromaticsAmidesEthers
LeaderboardsBiggestDeadliest

Fig. 1 · 2D structure RDKit

SMILESCC(C)NCC(COC1=CC=C(C=C1)CC(=O)N)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
3,000 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

3,000 mg/kg · very low toxicity · LD50 rat oral from source

3 more reported values
  • 2,000 mg/kgLD50 · oral · mouse
  • 59.24 mg/kgLD50 · iv · rat
  • 98.7 mg/kgLD50 · iv · mouse
DangerIrritantHealth hazardEnvironmentalH302, H319, H351, H360, H362, H411from source

Keep roaming

Where Atenolol leads

Relatedcomputed
Metoprolol62% similarBoth carry an alcohol, an ether and an amine group.Bisoprolol57% similarBoth carry an alcohol, an ether and an amine group.Propranolol44% similarBoth carry an alcohol, an ether and an amine group.Methocarbamol35% similarBoth carry an alcohol and an ether group.

Compare with

Atenolol vs Propranolol

Sources & methodology

PubChem CID
2249
Wikidata
Q411325
Structure
PubChem → RDKit
LD50
PubChem
Similar molecules
MoleculeFinder fingerprint similarity
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