quaternary ammonium ion tetramethylammonium (CH3)4N(+) 74.097 74.14482 Beilstein:1733140 C4H12N CAS:51-92-3 CHEBI:35264 CHEBI:46018 CHEBI:46020 C[N+](C)(C)C DrugBank:DB03095 Gmelin:1858 InChI=1S/C4H12N/c1-5(2,3)4/h1-4H3/q+1 N,N,N-trimethylmethanaminium PDBeChem:TMA PMID:10421447 PMID:10788331 QEMXHQIAXOOASZ-UHFFFAOYSA-N Reaxys:1733140 TETRAMETHYLAMMONIUM ION The simplest quaternary ammonium cation, comprising a central nitrogen linked to four methyl groups. Wikipedia:Tetramethylammonium [NMe4](+) chebi_ontology tetramethylammonium tetramethylazanium trimethylaminomethane