Chemicals and Drugs

Lactose

A disaccharide of GLUCOSE and GALACTOSE in human and cow milk. It is used in pharmacy for tablets, in medicine as a nutrient, and in industry.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A disaccharide of GLUCOSE and GALACTOSE in human and cow milk. It is used in pharmacy for tablets, in medicine as a nutrient, and in industry.

Chemical Identity

Chemical Information

Molecular Formula
C12H22O11
Molecular Weight
342.30 g/mol
CAS Registry No.
14641-93-1
IUPAC Name
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol
InChIKey
GUBGYTABKSRVRQ-XLOQQCSPSA-N
SMILES
C([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO)O)O)O)O
MeSH Unique ID
D007785
Source
PubChem CID 84571

MeSH Record

Classification

Broader headings

Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

2 entry terms
  • Anhydrous Lactose
  • Lactose, Anhydrous

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analogs & derivatives, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Lactose. Medical Subject Headings (MeSH). 2026. Unique ID D007785. http://id.nlm.nih.gov/mesh/2026/D007785
  2. Lactose. In: Wikidata. https://www.wikidata.org/wiki/Q27104342
  3. Lactose. In: PubChem Compound. CID 84571. https://pubchem.ncbi.nlm.nih.gov/compound/84571