SHEET /m/cannabinol · PubChem CID 2543 · CAS 521-35-7 · REV 2026.07

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Cannabinol

from source

C21H26O2 · 310.4 g/mol

What is Cannabinol?

CBN, what THC slowly turns into as cannabis ages and oxidizes. Old stored cannabis is higher in it and lower in THC. from source

CategoryPlant

Chemical familyAromatics Phenols Ethers

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Fig. 1 · 2D structure RDKit

SMILESCCCCCC1=CC(=C2C(=C1)OC(C3=C2C=C(C=C3)C)(C)C)O

Toxicity & hazards

WarningIrritantHealth hazardH302, H315, H319, H335, H361, H413from source

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Where Cannabinol leads

Relatedcomputed

Tetrahydrocannabinol41% similarBoth carry a phenol and an ether group.

Sources & methodology

PubChem CID: 2543
Wikidata: Q265831
Structure: PubChem → RDKit
Similar molecules: MoleculeFinder fingerprint similarity
Data refreshed: October 19, 2026

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