Search on: QUATERNARY AMMONIUM COMPOUNDS 
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Descriptor English:   Quaternary Ammonium Compounds 
Descriptor Spanish:   Compuestos de Amonio Cuaternario 
Descriptor Portuguese:   Compostos de Amônio Quaternário 
Synonyms English:   Ammonium Compounds, Quaternary  
Tree Number:   D01.625.062.500
D02.092.877
D02.675.276
Definition English:   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. 
Indexing Annotation English:   general or unspecified; prefer specifics
See Related English:   Pyridinium Compounds
Quinolinium Compounds
 
History Note English:   2006(1963) 
Allowable Qualifiers English:  
AD administration & dosage AE adverse effects
AG agonists AN analysis
AI antagonists & inhibitors BL blood
CF cerebrospinal fluid CS chemical synthesis
CH chemistry CL classification
EC economics HI history
IM immunology IP isolation & purification
ME metabolism PK pharmacokinetics
PD pharmacology PO poisoning
RE radiation effects ST standards
SD supply & distribution TU therapeutic use
TO toxicity UR urine
Record Number:   659 
Unique Identifier:   D000644 

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