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Quaternary Ammonium Compounds

"Quaternary Ammonium Compounds" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

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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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This graph shows the total number of publications written about "Quaternary Ammonium Compounds" by people in this website by year, and whether "Quaternary Ammonium Compounds" was a major or minor topic of these publications.
Bar chart showing 53 publications over 25 distinct years, with a maximum of 5 publications in 1999
To see the data from this visualization as text, click here.