The<unk> s are a family of water-soluble quaternary ammonium compounds.<unk>  is the parent compound of the<unk> s class, consisting of ethanolamine having three methyl substituents attached to the amino function.<unk>  hydroxide is known as<unk>  base. It is hygroscopic and thus often encountered as a colorless viscous hydrated syrup that smells of trimethylamine (TMA). Aqueous solutions of<unk>  are stable, but the compound slowly breaks down to ethylene glycol, polyethylene glycols, and TMA.<unk> <unk> loride can be made by treating TMA with 2-chloroethanol: :<unk> 3)3N + ClCH2CH2OH → <unk> 3)3N+CH2CH2OH · Cl– The 2-chloroethanol can be generated from ethylene oxide.<unk>  has historically been produced from natural sources, such as via hydrolysis of lecithin.
Choline
Phenylacetic acid
Arachidonic acid
Keto acid
Gluten
Butyric acid
Palate
Inositol