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.
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.
| Descriptor ID |
D000644
|
| MeSH Number(s) |
D01.625.075 D02.092.877 D02.675.276
|
| Concept/Terms |
|
Below are MeSH descriptors whose meaning is more general than "Quaternary Ammonium Compounds".
Below are MeSH descriptors whose meaning is more specific than "Quaternary Ammonium Compounds".
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.
To see the data from this visualization as text,
click here.
| Year | Major Topic | Minor Topic | Total |
|---|
| 1999 | 0 | 1 | 1 |
| 2004 | 0 | 1 | 1 |
| 2005 | 0 | 1 | 1 |
| 2013 | 0 | 2 | 2 |
| 2019 | 1 | 1 | 2 |
To return to the timeline,
click here.
Below are the most recent publications written about "Quaternary Ammonium Compounds" by people in Profiles.