Term Name:	quaternary ammonium ion
Synonyms:	a quaternary ammonium, Quaternary amine, quaternary ammonium ion, quaternary ammonium ions
Definition:	A derivative of ammonium, NH4(+), in which all four of the hydrogens bonded to nitrogen have been replaced with univalent (usually organyl) groups.
Ontology:	ChEBI [CHEBI:35267] ( EBI )

Relationships

is a type of:	ammonium ion derivative organic cation
has subtype:	(1R,2S,1'R,2'S)-doxacurium (1S,2R,1'S,2'R)-doxacurium (13S,14R)-1,8-dihydroxy-13-O-acetyl-N-methylcanadine (13S,14R)-1,13-dihydroxy-N-methylcanadine (13S,14R)-1-hydroxy-13-O-acetyl-N-methylcanadine (S)-1,2,9,10-tetramethoxy-6-methylaporphine(1+) (S)-1-hydroxy-N-methylcanadine (S)-cis-N-methylstylopine (S)-cis-N-methyltetrahydropalmatine (S)-cis-N-methyltetrahydrothalifendine (S)-magnoflorine (S)-N-methylcanadine 1,1'-hexadecane-1,16-diylbis(1-methylpyrrolidinium) 1-acylglycerophosphocholine(1+) 1-methyl-1-[1-oxo-1-(10H-phenothiazin-10-yl)propan-2-yl]pyrrolidinium 2-(1H-imidazol-5-yl)ethyl-trimethylammonium 2-[4-(2-aminoethyl)-2-hydroxyphenoxy]ethyl-trimethylammonium 2-[5-(2-aminoethyl)-2-hydroxyphenoxy]ethyl-trimethylammonium 2-acylglycerophosphocholine(1+) 2-fluorobenzenaminium 2-trimethylaminoethylphosphonic acid 3-(4-carboxybutanamido)-1-{4-[(2-hydroxyethyl)carbamoyl]benzyl}-1-methylpiperidinium 3-dehydrocarnitinium 3-dehydrocarnityl CoA 3-fluorobenzenaminium 3-hydroxy-N(6),N(6),N(6)-trimethyl-L-lysine 4-(trimethylammonio)but-2-enoic acid 4-(trimethylammonio)butanoic acid 4-(trimethylammonium)benzenediazonium 4-DAMP(1+) 4-fluorobenzenaminium 4-hydroxy-N,N,N-trimethyltryptamine(1+) 4-methylajmaline 4-methylnorajmaline 6-bromoconicamin [2-(3,4-dihydroxyphenyl)-2-hydroxyethyl]-trimethylammonium acetyl-beta-methylthiocholine aclidinium acylcholine aeruginascin(1-) ambenonium an (S)-cis-N-methyl-7,8,13,14-tetrahydroprotoberberine angryline(1+) atracurium benzododecinium betaine aldehyde betaine aldehyde hydrate bethanechol bretylium butropium butylscopolamine butyrylthiocholine carnitinamide carnitinium carpronium CDP-choline(1+) cetyltrimethylammonium ion chlormequat choline hydrogen sulfate cholines cisatracurium clidinium cyclanoline decamethonium decyltrimethylammonium ion demarcarium diphthamide diphthamide zwitterion diphthine dodeclonium dodecyltrimethylammonium ion doxacurium ecothiopate edrophonium ergothioneyl-alpha-D-lincosamide(+1) ethyl green(1+) ethyltrimethylammonium flutropium FM 1-43(2+) FM 4-64(2+) furtrethonium gamma-butyrobetainyl-CoA iodine green(2+) ipratropium JOJO-1(4+) LoLo-1(4+) m-trimethylammonio(2,2,2-trifluoro-1,1-dihydroxyethyl)benzene mepiquat meso-doxacurium methacholine methyl green(2+) methylated tertiary amine methyltrioctylammonium N(4)-bis(aminopropyl)spermidine(1+) N(4)-bis(aminopropyl)spermidine(5+) N(alpha),N(alpha),N(alpha)-trimethyl-L-histidinium(1+) N,N,N-trimethyl-N-(4-oxopentyl)ammonium N,N,N-trimethylglycinium N,N,N-trimethylglycyl-CoA N,N-dimethyl-L-prolinium N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonic acid N-methyl-alpha-berbine N-methylbulbocapnine(1+) neostigmine O-acetylcarnitinium octyltrimethylammonium ion oxotremorine M p-azophenyltrimethylammonium penotonium cation pentacynium chloride pentamethonium phosphatidylcholine(1+) Po-Pro-1(2+) Po-Pro-3(2+) PoPo-1(4+) PoPo-3(4+) propidium rezafungin rocuronium sphingoid-1-phosphocholine(1+) sphingomyelin d18:1(1+) sphingosylphosphocholine acid succinylcholine tembetarine tetrabutylammonium tetraethylammonium tetrafluoroammonium tetramethylammonium tetrapentylammonium tetrapropylammonium tiemonium tiotropium tiquizium ToTo-1(4+) tridihexethyl trimethylphenylammonium trospium umeclidinium vecuronium Yo-Pro-1(2+) Yo-Pro-3(2+) YoYo-1(4+)
has_parent_hydride:	ammonium
inverse has_part:	quaternary ammonium salt quaternary nitrogen compound