<unk> , also called 2-aminoethanol or monoethanolamine (often abbreviated as MEA), is an organic chemical compound which is both a primary amine (due to an amino group in its molecule) and a primary alcohol (due to a hydroxyl group).  Like other amines, monoethanolamine acts as a weak base.<unk>  is a toxic, flammable, corrosive, colorless, viscous liquid with an odor similar to ammonia. Refractive index of<unk>  is 1.4539.<unk>  is commonly called monoethanolamine or MEA to distinguish it from diethanolamine (DEA) and triethanolamine (TEA).  Monoethanolamine is produced by reacting ethylene oxide with ammonia.  Further treatment with ethylene oxide can yield DEA and/or TEA.<unk>  is the second most abundant head group for phospholipids, substances found in biological membranes.<unk>  also refers to a class of antihistamines containing an ethyl-amine group attached to a diphenyl structure.  Examples of drugs within this class include diphenhydramine (Benadryl), phenyltoloxamine (Percogesic), and doxylamine (Unisom Sleep Tablets).  They are one of the oldest classes of antihistamine drugs, yet remain the most effective for treating allergy symptoms, even exceeding the effectiveness of new OTC and prescription antihistamines such as loratadine (Claritin) and Fexofenadine (Allegra).  However, all<unk> s are extremely sedating, even more so than many barbiturates.  For this reason, they are not always desirable drugs for treatment, and less-effective drugs are indicated to avoid the substantial drowsiness inherent in<unk> s.  On the other hand, they are such effective sedatives that they are marketed as over-the-counter sleep-aids in addition to anti-allergy medications.
Ethanolamine
Prothionamide
Methoserpidine
Clofedanol
Ethionamide
Metaraminol
Moxaverine
Papaverine