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SHEET /m/lactose · PubChem CID 6134 · CAS 5965-66-2 · REV 2026.07

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Lactose

from source

C12H22O11 · 342.3 g/mol

Milk sugar

What is Lactose?

Milk sugar, glucose joined to galactose. Most adults worldwide stop making the enzyme that splits it, which is what lactose intolerance is. Found in chocolate and milk. from source

CategorySweetener
Chemical familyAlcoholsEthers
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Fig. 1 · 2D structure RDKit

SMILESC([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@@H]2[…89 characters

Where you'll find it

Chocolatewhat else is in it →Milkwhat else is in it →

Curated by MoleculeFinder from source

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Where Lactose leads

Relatedcomputed
Maltodextrin100% similarBoth carry an alcohol and an ether group.Maltose100% similarBoth carry an alcohol and an ether group.Glycogen82% similarBoth carry an alcohol and an ether group.Amylopectin82% similarBoth carry an alcohol and an ether group.Trehalose69% similarBoth carry an alcohol and an ether group.Amylose63% similarBoth carry an alcohol and an ether group.

Compare with

Lactose vs Galactose

Sources & methodology

PubChem CID
6134
Wikidata
Q127900
Structure
PubChem → RDKit
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Everyday relationships
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