Chemicals and Drugs

Quaternary Ammonium Compounds

Derivatives of ammonium compounds, NH4+ Y-, in which all four of the hydrogens bonded to nitrogen have been replaced with hydrocarbyl groups. These are distinguished from IMINES which are RN=CR2.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Derivatives of ammonium compounds, NH4+ Y-, in which all four of the hydrogens bonded to nitrogen have been replaced with hydrocarbyl groups. These are distinguished from IMINES which are RN=CR2.

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Classification

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Synonyms

4 entry terms
  • Quaternary Ammonium Compound
  • Ammonium Compound, Quaternary
  • Ammonium Compounds, Quaternary
  • Compound, Quaternary Ammonium

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Aspects Covered

24 allowable subheadings

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

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Indexing Annotation

general or unspecified; prefer specifics

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History Note

2006(1963)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Quaternary Ammonium Compounds. Medical Subject Headings (MeSH). 2026. Unique ID D000644. http://id.nlm.nih.gov/mesh/2026/D000644
  2. Quaternary Ammonium Compounds. In: Wikidata. https://www.wikidata.org/wiki/Q72087444